H Hartley Sweeten [Thu, 18 Apr 2013 21:34:37 +0000 (14:34 -0700)]
staging: comedi: drivers: free_irq() in comedi_legacy_detach()
All the legacy comedi drivers now call comedi_legacy_detach()
either directly or as part of their (*detach). Move the free_irq()
into comedi_legacy_detach() so that the drivers don't have to
deal with it.
For drivers that then only call comedi_legacy_detach() in their
private (*detach), remove the private function and use the helper
directly for the (*detach).
The amplc_pc236 and ni_labpc drivers are hybrid legacy/PCI drivers.
In the detach of a PCI board free_irq() still needs to be handled
by the driver.
The pcl724 and pcl726 drivers currently have the free_irq() #ifdef'ed
out. The comedi_legacy_detach() function sanity checks that the irq
has been requested before freeing it so they are safe to convert.
For aesthetic reasons, move the #ifdef unused chunk in the pcl816
driver up to the previous #ifdef unused block.
The pcmio and pcmuio drivers request multiple irqs and handle the
freeing of them. Remove the 'dev->irq = irq[0]' in those drivers
so that comedi_legacy_detach() does not attempt to free the irq.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:34:19 +0000 (14:34 -0700)]
staging: comedi: drivers: use comedi_legacy_detach()
Use comedi_legacy_detach() to release the I/O region requested
by these drivers.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:34:00 +0000 (14:34 -0700)]
staging: comedi: skel: use comedi_legacy_detach()
Update the skeleton driver to use the new comedi_legacy_detach()
helper in the (*detach) to release the I/O region. Also, update
the comment about it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:33:40 +0000 (14:33 -0700)]
staging: comedi: amplc_dio200: use comedi_legacy_detach()
The I/O region used by this driver is always requested using
comedi_request_region(). The devpriv->io union is only used by
the common code shared by the legacy and PCI drivers.
Use the new comedi_legacy_detach() helper in the (*detach) to
release the I/O region requested by this driver. That function
will handle the proper sanity checking before releasing the
resource.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:33:22 +0000 (14:33 -0700)]
staging: comedi: drivers: use comedi_legacy_detach() in simple drivers
Use the new comedi_legacy_detach() helper in the (*detach) to release
the I/O region requested by these drivers.
Since the (*detach) for these drivers only releases the region, remove
the private (*detach) functions and use comedi_legacy_detach() directly
for the (*detach).
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:33:04 +0000 (14:33 -0700)]
staging: comedi: das1800: use comedi_legacy_detach()
Use the new comedi_legacy_detach() helper in the (*detach) to release
the first I/O region requested by this driver.
An additional I/O region is requested for some of the boards this driver
supports. The iobase for that region is stored in the private data so
that the (*detach) knows it needs to be released. Remove the extra
cleanup in the (*attach) that releases the first region.
For aesthetics, move the release of the additional region in the
(*detach) so it follows the (*attach) order.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:32:48 +0000 (14:32 -0700)]
staging: comedi: das16m1: check for subdev_8255_init() failure
Make sure to check if subdev_8255_init() fails and propogate the
error code.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:32:28 +0000 (14:32 -0700)]
staging: comedi: das16m1: use comedi_legacy_detach()
Use the new comedi_legacy_detach() helper in the (*detach) to release
the first I/O region requested by this driver.
An additional I/O region is requested by this driver for the 8255
device. Save the iobase for that region in the private data so that
the (*detach) knows it needs to be released.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:32:12 +0000 (14:32 -0700)]
staging: comedi: das16: use comedi_legacy_detach()
Use the new comedi_legacy_detach() helper in the (*detach) to release
the first I/O region requested by this driver.
An additional I/O region is requested for some of the boards this driver
supports. Save the iobase for that region in the private data so that
the (*detach) knows it needs to be released.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:31:52 +0000 (14:31 -0700)]
staging: comedi: pcl812: use comedi_legacy_detach()
This driver does not follow the standard (*attach) (*detach) flow of
the other drivers in comedi. Comedi drivers do not 'cleanup' any of
the allocations made during the (*attach) if failures are encountered.
If the (*attach) fails, the comedi core will call the (*detach) to
handle any clenaup.
In this driver, the function free_resources() handles all the cleanup.
Remove the calls to this function during the (*attach). Since the
(*detach) is then the only caller, remove the function and just put
all the cleanup in the (*detach) function.
Use the new comedi_legacy_detach() helper in the (*detach) to release
the I/O region.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
H Hartley Sweeten [Thu, 18 Apr 2013 21:31:29 +0000 (14:31 -0700)]
staging: comedi: drivers: introduce comedi_legacy_detach()
This function is intended to be used by the comedi legacy (ISA) drivers
either directly as the (*detach) function or as a helper in the drivers
private (*detach) function.
Modify the comedi_request_region() helper so that it stores the 'len' of
the region as well as the 'start' after the region has been successfuly
allocated by request_region() in __comedi_request_region(). This region
will then be automatically released detach of the driver by the
comedi_legacy_detach() helper.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David S. Miller [Fri, 19 Apr 2013 18:19:07 +0000 (14:19 -0400)]
Merge branch 'intel'
Jeff Kirsher says:
====================
This series contains updates to ixgbe and igb.
The ixgbe changes contains 2 patches from the community, one which is a
fix from akepner to fix a issue where netif_running() in shutdown was
not done under rtnl_lock. The other community fix from Joe Perches
cleans up #ifdef CONFIG_DEBUG_FS which is no longer necessary. The
last ixgbe patch, from Jacob Keller, adds support for WoL on 82559
SFP+ LOM.
The remaining patches are against igb, 10 of which were previously
submitted in a pull request where changes were requested.
The following igb patches:
igb: Support for 100base-fx SFP
igb: Support to read and export SFF-8472/8079 data
are v2 based on feedback from Dan Carpenter and Ben Hutchings in
the previous pull request.
The largest set of changes are in my patch to cleanup code comments
and whitespace to align the igb driver with the networking style of
code comments. While cleaning up the code comments, fixed several
other whitespace/checkpatch.pl code formatting issues.
Other notable igb patches are EEE capable devices query the PHY to
determine what the link partner is advertising, added support for
i354 devices and added support for spoofchk config.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Fri, 19 Apr 2013 11:35:45 +0000 (14:35 +0300)]
staging: rts5129: re-use kbasename()
The custom filename function mostly repeats the kernel's kbasename. This patch
simplifies it. The updated filename() will not check for the '\' in the
filenames. It seems redundant in Linux. The __FILE__ macro always defined if we
compile an existing file. Thus, NULL check is not needed there as well.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Daniel Borkmann [Fri, 19 Apr 2013 12:17:22 +0000 (14:17 +0200)]
staging: net: remove pc300 driver
To quote the TODO from staging/net/:
PC300:
The driver is very broken and cannot work with the current TTY
layer. It is inevitable to convert it to the new TTY API. If no
one steps in to adopt the driver, it will be removed in the 3.7
release.
Nothing has changed since more than _one_ year on this driver, thus
just remove it since we already moved past 3.7. If somebody steps
up and does a whole rework, he/she, of course, is free to resubmit
it. Since this is the only one in the net directory, we can remove
it as well.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Darrick J. Wong [Fri, 19 Apr 2013 18:04:12 +0000 (14:04 -0400)]
ext4: mext_insert_extents should update extent block checksum
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Tomas Winkler [Thu, 18 Apr 2013 20:03:48 +0000 (23:03 +0300)]
mei: revamp hbm state machine
1. Rename init_clients_state to hbm_state and use
MEI_HBM_ prefix for HBM states
2. Remove recvd_msg and use hbm state for synchronizing
hbm protocol has successful start.
We can wake up the hbm event from start response handler
and remove the hack from the interrupt thread
3. mei_hbm_start_wait function encapsulate start completion
waiting
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jan Kara [Fri, 19 Apr 2013 17:38:14 +0000 (13:38 -0400)]
ext4: move quota initialization out of inode allocation transaction
Inode allocation transaction is pretty heavy (246 credits with quotas
and extents before previous patch, still around 200 after it). This is
mostly due to credits required for allocation of quota structures
(credits there are heavily overestimated but it's difficult to make
better estimates if we don't want to wire non-trivial assumptions about
quota format into filesystem).
So move quota initialization out of allocation transaction. That way
transaction for quota structure allocation will be started only if we
need to look up quota structure on disk (rare) and furthermore it will
be started for each quota type separately, not for all of them at once.
This reduces maximum transaction size to 34 is most cases and to 73 in
the worst case.
[ Modified by tytso to clean up the cleanup paths for error handling.
Also use a separate call to ext4_std_error() for each failure so it
is easier for someone who is debugging a problem in this function to
determine which function call failed. ]
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Johan Hovold [Thu, 18 Apr 2013 15:33:23 +0000 (17:33 +0200)]
USB: ti_usb_3410_5052: kill custom closing_wait
Kill custom closing_wait implementation and let the tty-layer handle it
instead.
Note that the port drain-delay is set to three characters to keep the
20ms delay after wait_until_sent at low baudrates (1200 baud) during close.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 18 Apr 2013 15:33:22 +0000 (17:33 +0200)]
USB: ti_usb_3410_5052: remove redundant drain from break_ctl
Remove redundant drain, which has already been handled by the tty-layer,
from break_ctl.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 18 Apr 2013 15:33:21 +0000 (17:33 +0200)]
USB: ti_usb_3410_5052: query hardware-buffer status in chars_in_buffer
Query hardware-buffer status in chars_in_buffer should the write fifo be
empty.
This is needed to make the tty layer wait for hardware buffers to drain
on close.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 18 Apr 2013 15:33:20 +0000 (17:33 +0200)]
USB: ti_usb_3410_5052: remove lsr from port data
The line status register is only polled so let's not keep a possibly
outdated value in the port data.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 18 Apr 2013 15:33:19 +0000 (17:33 +0200)]
USB: ti_usb_3410_5052: move write-fifo flushing to close
Move write-fifo flushing from ti_drain to close where it belongs.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 18 Apr 2013 15:33:18 +0000 (17:33 +0200)]
USB: io_ti: remove redundant wait_until_sent
Remove redundant wait_until_sent, which has already been handled by the
tty-layer, from break_ctl.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 18 Apr 2013 15:33:17 +0000 (17:33 +0200)]
USB: io_ti: fix TIOCGSERIAL
Fix regression introduced by commit
f40d78155 ("USB: io_ti: kill custom
closing_wait implementation") which made TIOCGSERIAL return the wrong
value for closing_wait.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@vger.kernel.org> # 3.9
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ming Lei [Thu, 18 Apr 2013 04:17:38 +0000 (12:17 +0800)]
USB: usbtmc: remove unnecessary memory allocation
Inside usbtmc_ioctl_clear_out_halt()/usbtmc_ioctl_clear_in_halt(),
usb_clear_halt() needn't any buffer to pass in, so remove the
unnecessary memory allocation.
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Wei Yongjun [Fri, 19 Apr 2013 02:18:12 +0000 (10:18 +0800)]
usbatm: fix potential NULL pointer dereference
The dereference to 'instance' in the debug code should be moved
below the NULL test.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Fri, 19 Apr 2013 17:05:39 +0000 (10:05 -0700)]
mtdchar: remove no-longer-used vma helpers
With the conversion to vm_iomap_memory(), these vma helpers are no
longer used.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 19 Apr 2013 17:01:04 +0000 (10:01 -0700)]
vm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper
This is my example conversion of a few existing mmap users. The pcm
mmap case is one of the more straightforward ones.
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 19 Apr 2013 16:57:35 +0000 (09:57 -0700)]
vm: convert fb_mmap to vm_iomap_memory() helper
This is my example conversion of a few existing mmap users. The
fb_mmap() case is a good example because it is a bit more complicated
than some: fb_mmap() mmaps one of two different memory areas depending
on the page offset of the mmap (but happily there is never any mixing of
the two, so the helper function still works).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 19 Apr 2013 16:53:07 +0000 (09:53 -0700)]
vm: convert mtdchar mmap to vm_iomap_memory() helper
This is my example conversion of a few existing mmap users. The mtdchar
case is actually disabled right now (and stays disabled), but I did it
because it showed up on my "git grep", and I was familiar with the code
due to fixing an overflow problem in the code in commit
9c603e53d380
("mtdchar: fix offset overflow detection").
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 19 Apr 2013 16:46:39 +0000 (09:46 -0700)]
vm: convert HPET mmap to vm_iomap_memory() helper
This is my example conversion of a few existing mmap users. The HPET
case is simple, widely available, and easy to test (Clemens Ladisch sent
a trivial test-program for it).
Test-program-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hans Verkuil [Fri, 19 Apr 2013 16:40:05 +0000 (18:40 +0200)]
mfd: si476x: Fix i2c warning
drivers/mfd/si476x-i2c.c: In function ‘si476x_core_drain_rds_fifo’:
drivers/mfd/si476x-i2c.c:391:4: warning: field width specifier ‘*’ expects
+argument of type ‘int’, but argument 4 has type ‘long unsigned int’ [-Wformat]
Acked-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Andrey Smirnov [Thu, 18 Apr 2013 16:58:30 +0000 (09:58 -0700)]
mfd: si476x: Add header files and Kbuild plumbing
This patch adds all necessary header files and Kbuild plumbing for the
core driver for Silicon Laboratories Si476x series of AM/FM tuner
chips.
The driver as a whole is implemented as an MFD device and this patch
adds a core portion of it that provides all the necessary
functionality to the two other drivers that represent radio and audio
codec subsystems of the chip.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Andrey Smirnov [Thu, 18 Apr 2013 16:58:29 +0000 (09:58 -0700)]
mfd: si476x: Add chip properties handling code
This patch adds code related to manipulation of the properties of
SI476X chips.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Andrey Smirnov [Thu, 18 Apr 2013 16:58:28 +0000 (09:58 -0700)]
mfd: si476x: Add the bulk of the core driver
This patch adds main part(out of three) of the I2C driver for the
"core" of MFD device.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Andrey Smirnov [Thu, 18 Apr 2013 16:58:27 +0000 (09:58 -0700)]
mfd: si476x: Add commands abstraction layer
This patch adds all the functions used for exchanging commands with
the chip.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Wei WANG [Thu, 11 Apr 2013 02:43:40 +0000 (10:43 +0800)]
mfd: rtsx: Support RTS5249
RTS5249 supports SD UHS-II interface.
In order to support SD UHS-II,the definitions of some internal
registers of RTS5249 have to be modified and are different from its
predecessors. So we need this patch to ensure RTS5249 can work, even
SD/MMC stack doesn't support UHS-II interface.
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Linus Torvalds [Fri, 19 Apr 2013 16:15:13 +0000 (09:15 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"Two more small fixups to the wacom driver"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: wacom - fix "can not retrieve extra class descriptor" for DTH2242
Input: wacom - DTH2242 Grip Pen id was off by one bit
Linus Torvalds [Fri, 19 Apr 2013 16:12:55 +0000 (09:12 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse
Pull fuse build fix from Miklos Szeredi:
"This fixes android builds. The patch appears large, but is just
search & replace."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: fix type definitions in uapi header
Shawn Nematbakhsh [Mon, 15 Apr 2013 20:49:34 +0000 (13:49 -0700)]
Input: trackpoint - Optimize trackpoint init to use power-on reset
The trackpoint driver sets various parameter default values, all of
which happen to be power-on defaults (Source: IBM TrackPoint Engineering
Specification, Version 4.0. Also confirmed by empirical data).
By sending the power-on reset command to reset all parameters to
power-on state, we can skip the lengthy process of programming all
parameters. In testing, ~2.5 secs of time writing parameters was reduced
to .35 seconds waiting for power-on reset to complete.
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Ping Cheng [Tue, 16 Apr 2013 23:10:08 +0000 (16:10 -0700)]
Input: wacom - fix "can not retrieve extra class descriptor" for DTH2242
Same as Cintiq 24HDT, DTH2242 has two interfaces sharing one configuration.
This patch ignores the second interface.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Ping Cheng [Tue, 16 Apr 2013 23:09:33 +0000 (16:09 -0700)]
Input: wacom - DTH2242 Grip Pen id was off by one bit
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Paul Bolle [Tue, 5 Mar 2013 09:13:39 +0000 (10:13 +0100)]
ARM: SPEAr13xx: Fix typo "ARCH_HAVE_CPUFREQ"
Do what commit
f12a500e4adcc0961803e54b5ed1e74275d399f1
("ARM: SPEAr13xx: Enable CONFIG_ARCH_HAS_CPUFREQ") wanted to do.
[arnd: fix botched merge from changing the Kconfig file]
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Fri, 19 Apr 2013 15:18:46 +0000 (17:18 +0200)]
Merge branch 'next/spring-cleaning' into next/cleanup
Axel Lin [Tue, 9 Apr 2013 15:59:58 +0000 (23:59 +0800)]
pinctrl: vt8500: wmt: Fix checking return value of pinctrl_register()
pinctrl_register() returns NULL on error.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Arnd Bergmann [Fri, 19 Apr 2013 12:34:05 +0000 (14:34 +0200)]
Merge branch 'samsung/exynos-multiplatform' into next/drivers
Merging this into the next/drivers branch avoids a number of
pointless conflicts with code changed here.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Ben Guthro [Thu, 18 Apr 2013 21:39:48 +0000 (17:39 -0400)]
xen: resolve section mismatch warnings in xen-acpi-processor
The following resolves a section mismatch warning below in xen-acpi-processor introduced by
3fac10145b766a2244422788f62dc35978613fd8 [13/13] xen: Re-upload processor PM data to hypervisor after S3 resume (v2)
Warning:
WARNING: drivers/xen/built-in.o(.text+0x2056a): Section mismatch in reference from the function xen_upload_processor_pm_data() to the function .init.text:read_acpi_id()
The function xen_upload_processor_pm_data() references
the function __init read_acpi_id().
This is often because xen_upload_processor_pm_data lacks a __init
annotation or the annotation of read_acpi_id is wrong.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Ben Guthro <benjamin.guthro@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
David Müller (ELSOFT AG) [Fri, 19 Apr 2013 08:41:50 +0000 (10:41 +0200)]
drm/i915: Fall back to bit banging mode for DVO transmitter detection
As discussed in this thread
http://lists.freedesktop.org/archives/dri-devel/2013-April/037411.html
GMBUS based DVO transmitter detection seems to be unreliable which could
result in an unusable DVO port.
The attached patch fixes this by falling back to bit banging mode for
the time DVO transmitter detection is in progress.
Signed-off-by: David Müller <d.mueller@elsoft.ch>
Tested-by: David Müller <d.mueller@elsoft.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Frederic Weisbecker [Fri, 19 Apr 2013 14:17:38 +0000 (16:17 +0200)]
posix_timers: New API to prevent from stopping the tick when timers are running
Bring a new helper that the full dynticks infrastructure can
call in order to know if it can safely stop the tick from
the posix cpu timers subsystem point of view.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Gilad Ben Yossef <gilad@benyossef.com>
Cc: Hakan Akkan <hakanakkan@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Frederic Weisbecker [Wed, 17 Apr 2013 23:31:13 +0000 (01:31 +0200)]
posix_timers: Kick full dynticks CPUs when a posix cpu timer is armed
Kick the full dynticks CPUs when a posix cpu timer is enqueued by
way of a standard call to posix_cpu_timer_set() or set_process_cpu_timer().
This also include rescheduled firing timers.
This way they can re-evaluate the state of (and possibly restart) their
tick against the new expiry modification.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Gilad Ben Yossef <gilad@benyossef.com>
Cc: Hakan Akkan <hakanakkan@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Laurent Meunier [Thu, 18 Apr 2013 08:48:07 +0000 (10:48 +0200)]
pinctrl/pinconfig: add debug interface
This update adds a debugfs interface to modify a pin configuration
for a given state in the pinctrl map. This allows to modify the
configuration for a non-active state, typically sleep state.
This configuration is not applied right away, but only when the state
will be entered.
This solution is mandated for us by HW validation: in order
to test and verify several pin configurations during sleep without
recompiling the software.
Change log in this patch set;
Take into account latest feedback from Stephen Warren:
- stale comments update
- improved code efficiency and readibility
- limit size of global variable pinconf_dbg_conf
- remove req_type as it can easily be added later when
add/delete requests support is implemented
Signed-off-by: Laurent Meunier <laurent.meunier@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Johan Hedberg [Fri, 19 Apr 2013 07:14:51 +0000 (10:14 +0300)]
Bluetooth: Fix HCI command send functions to use const specifier
All HCI command send functions that take a pointer to the command
parameters do not need to modify the content in any way (they merely
copy the data to an skb). Therefore, the parameter type should be
declared const. This also allows passing already const parameters to
these APIs which previously would have generated a compiler warning.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Chen Gang [Fri, 19 Apr 2013 11:24:37 +0000 (12:24 +0100)]
arm64: Define readq and writeq for driver module using
when compiling with allmodconfig, CONFIG_64BIT=y the file
drivers/base/regmap/regmap-mmio.c will use readq and writeq so we need
implement these functions.
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Arnd Bergmann [Fri, 19 Apr 2013 11:35:57 +0000 (13:35 +0200)]
Merge branch 'samsung/exynos-multiplatform' into next/multiplatform
These patches get us closer to adding multiplatform support on
the Exynos platform, they are part of a longer series of
patches. This would get all the simple stuff out of the
way, and I don't think there is a big risk of introducing
regressions with these.
A lot of the other patches have already been merged into
subsystem trees. After this series in in arm-soc, what is
left comes down to
* The ASoC conversion to dmaengine won't make it unless someone
who knows that code better steps up to do it right away. This
means that we won't have audio in a 3.10 multiplatform kernel
on Exynos, but it will still work for users that don't enable
multiplatform.
* The irqchip (combiner), clk and clksource patches are all based
on top of other changesets we pulled in from your trees, so I
would not make them part of the next/multiplatform branch. We can
apply them on top of the next/drivers branch once they are
tested successfully.
* A trivial patch is needed in the end to actually make
CONFIG_ARCH_EXYNOS visible in multiplatform configurations.
We will do that as a separate patch once everything else is
there.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Frederic Weisbecker [Wed, 27 Mar 2013 00:17:22 +0000 (01:17 +0100)]
nohz: New option to default all CPUs in full dynticks range
Provide a new kernel config that defaults all CPUs to be part
of the full dynticks range, except the boot one for timekeeping.
This default setting is overriden by the nohz_full= boot option
if passed by the user.
This is helpful for those who don't need a finegrained range
of full dynticks CPU and also for automated testing.
Suggested-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Gilad Ben Yossef <gilad@benyossef.com>
Cc: Hakan Akkan <hakanakkan@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Frederic Weisbecker [Tue, 26 Mar 2013 22:47:24 +0000 (23:47 +0100)]
nohz: Ensure full dynticks CPUs are RCU nocbs
We need full dynticks CPU to also be RCU nocb so
that we don't have to keep the tick to handle RCU
callbacks.
Make sure the range passed to nohz_full= boot
parameter is a subset of rcu_nocbs=
The CPUs that fail to meet this requirement will be
excluded from the nohz_full range. This is checked
early in boot time, before any CPU has the opportunity
to stop its tick.
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Gilad Ben Yossef <gilad@benyossef.com>
Cc: Hakan Akkan <hakanakkan@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Frederic Weisbecker [Wed, 27 Mar 2013 01:18:34 +0000 (02:18 +0100)]
nohz: Force boot CPU outside full dynticks range
The timekeeping job must be able to run early on boot
because there may be some pre-SMP (and thus pre-initcalls )
components that rely on it. The IO-APIC is one such users
as it tests the timer health by watching jiffies progression.
Given that it happens before we know the initial online
set, we can't rely on it to select a timekeeper. We need
one before SMP time otherwise we simply crash on boot.
To fix this and keep things simple for now, force the boot CPU
outside of the full dynticks range in any case and do this early
on kernel parameter parsing time.
We might want a trickier solution later, expecially for aSMP
architectures that need to assign housekeeping tasks to arbitrary
low power CPUs.
But it's still first pass KISS time for now.
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Gilad Ben Yossef <gilad@benyossef.com>
Cc: Hakan Akkan <hakanakkan@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Arnd Bergmann [Wed, 10 Apr 2013 12:57:15 +0000 (14:57 +0200)]
ARM: exynos: enable multiplatform support
This makes it possible to enable the exynos platform as part of a
multiplatform kernel, in addition to keeping the single-platform
exynos support.
The multiplatform variant has a number of limitations at the moment:
* It only supports DT-enabled machines. This is not a problem in
the long run, as non-DT machines for exynos are going away.
The main problem here is that the gpio code and the exynos_eint
irqchip are not multiplatform capable but still required for
ATAGS based boot.
* The watchdog driver is still missing a conversion.
* sparsemem and memory_holes are currently not supported in
multiplatform.
The the multiplatform aware ARCH_EXYNOS Kconfig symbol is disabled
for now, as dependent patches are still pending in other
subsystem trees. We will enable it once everything comes together.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Tue, 5 Mar 2013 11:04:37 +0000 (12:04 +0100)]
rtc: s3c: make header file local
Nothing outside of the rtc driver includes plat/regs-rtc.h,
so we can simply move the file into the same directory,
which allows us to build the file as platform-independent
code.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: rtc-linux@googlegroups.com
Cc: Alessandro Zummo <a.zummo@towertech.it>
Arnd Bergmann [Tue, 5 Mar 2013 11:14:17 +0000 (12:14 +0100)]
mtd: onenand/samsung: make regs-onenand.h file local
Nothing uses the NAND register definitions other than the
actual driver, so we can move the header file into the
same local directory, which lets us build it in a multiplatform
configuration.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: linux-mtd@lists.infradead.org
Cc: David Woodhouse <dwmw2@infradead.org>
Arnd Bergmann [Tue, 5 Mar 2013 09:44:54 +0000 (10:44 +0100)]
thermal/exynos: remove unnecessary header inclusions
In multiplatform configurations, we cannot include headers
provided by only the exynos platform. Fortunately a number
of drivers that include those headers do not actually need
them, so we can just remove the inclusions.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Arnd Bergmann [Mon, 4 Mar 2013 17:28:21 +0000 (18:28 +0100)]
mmc: sdhci-s3c: remove platform dependencies
plat/regs-sdhci.h is not used anywhere but in the sdhci-s3c
driver, so it can become a local file there and all other
inclusions removed.
plat/sdhci.h is used only to define the platform devices,
and with the exception of the platform_data structure not
needed by the driver, so we can split out the platform_data
definition instead and leave the rest to platform code.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Chris Ball <cjb@laptop.org>
Arnd Bergmann [Wed, 10 Apr 2013 12:49:03 +0000 (14:49 +0200)]
ARM: samsung: move mfc device definition to s5p-dev-mfc.c
For a DT-only build we don't want to compile devs.c, but we do need
the mfc device, which is also referenced by the DT based platforms,
so move it all into one place.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Mon, 4 Mar 2013 17:03:10 +0000 (18:03 +0100)]
ARM: exynos: move debug-macro.S to include/debug/
The move is necessary to support early debug output on exynos
with multiplatform configurations. This implies also moving the
plat/debug-macro.S file, but we are leaving the remaining users of that
file in place, to avoid adding large numbers of extra configuration
options to Kconfig.debug
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Tue, 5 Mar 2013 10:28:29 +0000 (11:28 +0100)]
ARM: exynos: prepare for sparse IRQ
When we enable CONFIG_SPARSE_IRQ, we have to set the value of NR_IRQS in
the machine_desc for legacy IRQ domains, and any file referring to the
number of interrupts or a specific number must include the mach/irqs.h
header file explicitly.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Thu, 11 Apr 2013 21:13:27 +0000 (23:13 +0200)]
ARM: exynos: introduce EXYNOS_ATAGS symbol
As a preparation for multiplatform support, this introduces
a new Kconfig symbol to split the ATAGS based EXYNOS platforms
from the DT based ones. Turning off CONFIG_EXYNOS_ATAGS disables
all platforms that are not yet converted to DT, and we can
have code that relies on DT checking for this symbol being
disabled.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Ingo Molnar [Fri, 19 Apr 2013 11:03:08 +0000 (13:03 +0200)]
Merge tag 'edac_amd_f16h' of git://git./linux/kernel/git/ras/ras into x86/ras
Pull AMD F16h support for amd64_edac from Borislav Petkov.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Axel Lin [Fri, 19 Apr 2013 06:18:48 +0000 (14:18 +0800)]
regulator: palmas: Don't update tstep register for SMPS3 and SMPS7
SMPS3 and SMPS7 do not have tstep_addr setting, so current code actually
writes 0 to smps12_ctl (offset is 0) register when set_ramp_delay callback
is called for SMPS3 and SMPS7.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Aravind Gopalakrishnan [Wed, 17 Apr 2013 19:57:13 +0000 (14:57 -0500)]
amd64_edac: Add Family 16h support
Add code to handle DRAM ECC errors decoding for Fam16h.
Tested on Fam16h with ECC turned on using the mce_amd_inj facility and
works fine.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Boris: cleanups and clarifications ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Nicolas Ferre [Fri, 19 Apr 2013 09:28:34 +0000 (11:28 +0200)]
ARM: at91/sama5d34ek.dts: remove not needed compatibility string
"atmel,sama5ek" compatibility sting does not correspond to a
useful board configuration. This d34ek.dts is the only sama5d3
.dts file affected.
Reported-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Ludovic Desroches [Tue, 16 Apr 2013 13:03:10 +0000 (15:03 +0200)]
ARM: at91: dts: add MCI DMA support
Add DMA resources to MCI nodes.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
[nicolas.ferre@atmel.com: correct 9g45, 9n12 dma phandle name]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Ludovic Desroches [Tue, 16 Apr 2013 13:03:08 +0000 (15:03 +0200)]
ARM: at91: dts: add i2c dma support
Add DMA resources to i2c nodes.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
[nicolas.ferre@atmel.com: correct 9n12 dma phandle name]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Waiman Long [Wed, 17 Apr 2013 19:23:14 +0000 (15:23 -0400)]
mutex: Back out architecture specific check for negative mutex count
Linus suggested that probably all the supported architectures can
allow a negative mutex count without incorrect behavior, so we can
then back out the architecture specific change and allow the
mutex count to go to any negative number. That should further
reduce contention for non-x86 architecture.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Chandramouleeswaran Aswin <aswin@hp.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Norton Scott J <scott.norton@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1366226594-5506-5-git-send-email-Waiman.Long@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Waiman Long [Wed, 17 Apr 2013 19:23:13 +0000 (15:23 -0400)]
mutex: Queue mutex spinners with MCS lock to reduce cacheline contention
The current mutex spinning code (with MUTEX_SPIN_ON_OWNER option
turned on) allow multiple tasks to spin on a single mutex
concurrently. A potential problem with the current approach is
that when the mutex becomes available, all the spinning tasks
will try to acquire the mutex more or less simultaneously. As a
result, there will be a lot of cacheline bouncing especially on
systems with a large number of CPUs.
This patch tries to reduce this kind of contention by putting
the mutex spinners into a queue so that only the first one in
the queue will try to acquire the mutex. This will reduce
contention and allow all the tasks to move forward faster.
The queuing of mutex spinners is done using an MCS lock based
implementation which will further reduce contention on the mutex
cacheline than a similar ticket spinlock based implementation.
This patch will add a new field into the mutex data structure
for holding the MCS lock. This expands the mutex size by 8 bytes
for 64-bit system and 4 bytes for 32-bit system. This overhead
will be avoid if the MUTEX_SPIN_ON_OWNER option is turned off.
The following table shows the jobs per minute (JPM) scalability
data on an 8-node 80-core Westmere box with a 3.7.10 kernel. The
numactl command is used to restrict the running of the fserver
workloads to 1/2/4/8 nodes with hyperthreading off.
+-----------------+-----------+-----------+-------------+----------+
| Configuration | Mean JPM | Mean JPM | Mean JPM | % Change |
| | w/o patch | patch 1 | patches 1&2 | 1->1&2 |
+-----------------+------------------------------------------------+
| | User Range 1100 - 2000 |
+-----------------+------------------------------------------------+
| 8 nodes, HT off | 227972 | 227237 | 305043 | +34.2% |
| 4 nodes, HT off | 393503 | 381558 | 394650 | +3.4% |
| 2 nodes, HT off | 334957 | 325240 | 338853 | +4.2% |
| 1 node , HT off | 198141 | 197972 | 198075 | +0.1% |
+-----------------+------------------------------------------------+
| | User Range 200 - 1000 |
+-----------------+------------------------------------------------+
| 8 nodes, HT off | 282325 | 312870 | 332185 | +6.2% |
| 4 nodes, HT off | 390698 | 378279 | 393419 | +4.0% |
| 2 nodes, HT off | 336986 | 326543 | 340260 | +4.2% |
| 1 node , HT off | 197588 | 197622 | 197582 | 0.0% |
+-----------------+-----------+-----------+-------------+----------+
At low user range 10-100, the JPM differences were within +/-1%.
So they are not that interesting.
The fserver workload uses mutex spinning extensively. With just
the mutex change in the first patch, there is no noticeable
change in performance. Rather, there is a slight drop in
performance. This mutex spinning patch more than recovers the
lost performance and show a significant increase of +30% at high
user load with the full 8 nodes. Similar improvements were also
seen in a 3.8 kernel.
The table below shows the %time spent by different kernel
functions as reported by perf when running the fserver workload
at 1500 users with all 8 nodes.
+-----------------------+-----------+---------+-------------+
| Function | % time | % time | % time |
| | w/o patch | patch 1 | patches 1&2 |
+-----------------------+-----------+---------+-------------+
| __read_lock_failed | 34.96% | 34.91% | 29.14% |
| __write_lock_failed | 10.14% | 10.68% | 7.51% |
| mutex_spin_on_owner | 3.62% | 3.42% | 2.33% |
| mspin_lock | N/A | N/A | 9.90% |
| __mutex_lock_slowpath | 1.46% | 0.81% | 0.14% |
| _raw_spin_lock | 2.25% | 2.50% | 1.10% |
+-----------------------+-----------+---------+-------------+
The fserver workload for an 8-node system is dominated by the
contention in the read/write lock. Mutex contention also plays a
role. With the first patch only, mutex contention is down (as
shown by the __mutex_lock_slowpath figure) which help a little
bit. We saw only a few percents improvement with that.
By applying patch 2 as well, the single mutex_spin_on_owner
figure is now split out into an additional mspin_lock figure.
The time increases from 3.42% to 11.23%. It shows a great
reduction in contention among the spinners leading to a 30%
improvement. The time ratio 9.9/2.33=4.3 indicates that there
are on average 4+ spinners waiting in the spin_lock loop for
each spinner in the mutex_spin_on_owner loop. Contention in
other locking functions also go down by quite a lot.
The table below shows the performance change of both patches 1 &
2 over patch 1 alone in other AIM7 workloads (at 8 nodes,
hyperthreading off).
+--------------+---------------+----------------+-----------------+
| Workload | mean % change | mean % change | mean % change |
| | 10-100 users | 200-1000 users | 1100-2000 users |
+--------------+---------------+----------------+-----------------+
| alltests | 0.0% | -0.8% | +0.6% |
| five_sec | -0.3% | +0.8% | +0.8% |
| high_systime | +0.4% | +2.4% | +2.1% |
| new_fserver | +0.1% | +14.1% | +34.2% |
| shared | -0.5% | -0.3% | -0.4% |
| short | -1.7% | -9.8% | -8.3% |
+--------------+---------------+----------------+-----------------+
The short workload is the only one that shows a decline in
performance probably due to the spinner locking and queuing
overhead.
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Reviewed-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Chandramouleeswaran Aswin <aswin@hp.com>
Cc: Norton Scott J <scott.norton@hp.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1366226594-5506-4-git-send-email-Waiman.Long@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Waiman Long [Wed, 17 Apr 2013 19:23:12 +0000 (15:23 -0400)]
mutex: Make more scalable by doing less atomic operations
In the __mutex_lock_common() function, an initial entry into
the lock slow path will cause two atomic_xchg instructions to be
issued. Together with the atomic decrement in the fast path, a
total of three atomic read-modify-write instructions will be
issued in rapid succession. This can cause a lot of cache
bouncing when many tasks are trying to acquire the mutex at the
same time.
This patch will reduce the number of atomic_xchg instructions
used by checking the counter value first before issuing the
instruction. The atomic_read() function is just a simple memory
read. The atomic_xchg() function, on the other hand, can be up
to 2 order of magnitude or even more in cost when compared with
atomic_read(). By using atomic_read() to check the value first
before calling atomic_xchg(), we can avoid a lot of unnecessary
cache coherency traffic. The only downside with this change is
that a task on the slow path will have a tiny bit less chance of
getting the mutex when competing with another task in the fast
path.
The same is true for the atomic_cmpxchg() function in the
mutex-spin-on-owner loop. So an atomic_read() is also performed
before calling atomic_cmpxchg().
The mutex locking and unlocking code for the x86 architecture
can allow any negative number to be used in the mutex count to
indicate that some tasks are waiting for the mutex. I am not so
sure if that is the case for the other architectures. So the
default is to avoid atomic_xchg() if the count has already been
set to -1. For x86, the check is modified to include all
negative numbers to cover a larger case.
The following table shows the jobs per minutes (JPM) scalability
data on an 8-node 80-core Westmere box with a 3.7.10 kernel. The
numactl command is used to restrict the running of the
high_systime workloads to 1/2/4/8 nodes with hyperthreading on
and off.
+-----------------+-----------+------------+----------+
| Configuration | Mean JPM | Mean JPM | % Change |
| | w/o patch | with patch | |
+-----------------+-----------------------------------+
| | User Range 1100 - 2000 |
+-----------------+-----------------------------------+
| 8 nodes, HT on | 36980 | 148590 | +301.8% |
| 8 nodes, HT off | 42799 | 145011 | +238.8% |
| 4 nodes, HT on | 61318 | 118445 | +51.1% |
| 4 nodes, HT off | 158481 | 158592 | +0.1% |
| 2 nodes, HT on | 180602 | 173967 | -3.7% |
| 2 nodes, HT off | 198409 | 198073 | -0.2% |
| 1 node , HT on | 149042 | 147671 | -0.9% |
| 1 node , HT off | 126036 | 126533 | +0.4% |
+-----------------+-----------------------------------+
| | User Range 200 - 1000 |
+-----------------+-----------------------------------+
| 8 nodes, HT on | 41525 | 122349 | +194.6% |
| 8 nodes, HT off | 49866 | 124032 | +148.7% |
| 4 nodes, HT on | 66409 | 106984 | +61.1% |
| 4 nodes, HT off | 119880 | 130508 | +8.9% |
| 2 nodes, HT on | 138003 | 133948 | -2.9% |
| 2 nodes, HT off | 132792 | 131997 | -0.6% |
| 1 node , HT on | 116593 | 115859 | -0.6% |
| 1 node , HT off | 104499 | 104597 | +0.1% |
+-----------------+------------+-----------+----------+
At low user range 10-100, the JPM differences were within +/-1%.
So they are not that interesting.
AIM7 benchmark run has a pretty large run-to-run variance due to
random nature of the subtests executed. So a difference of less
than +-5% may not be really significant.
This patch improves high_systime workload performance at 4 nodes
and up by maintaining transaction rates without significant
drop-off at high node count. The patch has practically no
impact on 1 and 2 nodes system.
The table below shows the percentage time (as reported by perf
record -a -s -g) spent on the __mutex_lock_slowpath() function
by the high_systime workload at 1500 users for 2/4/8-node
configurations with hyperthreading off.
+---------------+-----------------+------------------+---------+
| Configuration | %Time w/o patch | %Time with patch | %Change |
+---------------+-----------------+------------------+---------+
| 8 nodes | 65.34% | 0.69% | -99% |
| 4 nodes | 8.70% | 1.02% | -88% |
| 2 nodes | 0.41% | 0.32% | -22% |
+---------------+-----------------+------------------+---------+
It is obvious that the dramatic performance improvement at 8
nodes was due to the drastic cut in the time spent within the
__mutex_lock_slowpath() function.
The table below show the improvements in other AIM7 workloads
(at 8 nodes, hyperthreading off).
+--------------+---------------+----------------+-----------------+
| Workload | mean % change | mean % change | mean % change |
| | 10-100 users | 200-1000 users | 1100-2000 users |
+--------------+---------------+----------------+-----------------+
| alltests | +0.6% | +104.2% | +185.9% |
| five_sec | +1.9% | +0.9% | +0.9% |
| fserver | +1.4% | -7.7% | +5.1% |
| new_fserver | -0.5% | +3.2% | +3.1% |
| shared | +13.1% | +146.1% | +181.5% |
| short | +7.4% | +5.0% | +4.2% |
+--------------+---------------+----------------+-----------------+
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Reviewed-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Chandramouleeswaran Aswin <aswin@hp.com>
Cc: Norton: Scott J <scott.norton@hp.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1366226594-5506-3-git-send-email-Waiman.Long@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Waiman Long [Wed, 17 Apr 2013 19:23:11 +0000 (15:23 -0400)]
mutex: Move mutex spinning code from sched/core.c back to mutex.c
As mentioned by Ingo, the SCHED_FEAT_OWNER_SPIN scheduler
feature bit was really just an early hack to make with/without
mutex-spinning testable. So it is no longer necessary.
This patch removes the SCHED_FEAT_OWNER_SPIN feature bit and
move the mutex spinning code from kernel/sched/core.c back to
kernel/mutex.c which is where they should belong.
Signed-off-by: Waiman Long <Waiman.Long@hp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Chandramouleeswaran Aswin <aswin@hp.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Norton Scott J <scott.norton@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1366226594-5506-2-git-send-email-Waiman.Long@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Li Zefan [Fri, 19 Apr 2013 06:09:52 +0000 (23:09 -0700)]
cgroup: fix broken file xattrs
We should store file xattrs in struct cfent instead of struct cftype,
because cftype is a type while cfent is object instance of cftype.
For example each cgroup has a tasks file, and each tasks file is
associated with a uniq cfent, but all those files share the same
struct cftype.
Alexey Kodanev reported a crash, which can be reproduced:
# mount -t cgroup -o xattr /sys/fs/cgroup
# mkdir /sys/fs/cgroup/test
# setfattr -n trusted.value -v test_value /sys/fs/cgroup/tasks
# rmdir /sys/fs/cgroup/test
# umount /sys/fs/cgroup
oops!
In this case, simple_xattrs_free() will free the same struct simple_xattrs
twice.
tj: Dropped unused local variable @cft from cgroup_diput().
Cc: <stable@vger.kernel.org> # 3.8.x
Reported-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Benjamin Tissoires [Wed, 17 Apr 2013 16:15:15 +0000 (18:15 +0200)]
HID: appleir: add support for Apple ir devices
This driver was originally written by James McKenzie, updated by
Greg Kroah-Hartman, further updated by Bastien Nocera, with suspend
support added.
I ported it to the HID subsystem, in order to simplify it a litle
and allow lirc to use it through hiddev.
More recent versions of the IR receiver are also supported through
a patch by Alex Karpenko. The patch also adds support for the 2nd
and 5th generation of the controller, and the menu key on newer
brushed metal remotes.
Tested-by: Fabien André <fabien.andre@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Joe Perches [Thu, 18 Apr 2013 21:17:14 +0000 (14:17 -0700)]
usb: storage: Fix link error
Fix allmodconfig link error introduced by commit
75b9130e8a
("usb: storage: Add usb_stor_dbg, reduce object size")
Export the symbol usb_stor_dbg.
Add export.h
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Fri, 19 Apr 2013 01:09:12 +0000 (18:09 -0700)]
Merge branch 'userns-fixes' of git://git./linux/kernel/git/luto/linux
Pull user-namespace fixes from Andy Lutomirski.
* 'userns-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux:
userns: Changing any namespace id mappings should require privileges
userns: Check uid_map's opener's fsuid, not the current fsuid
userns: Don't let unprivileged users trick privileged users into setting the id_map
Mauro Carvalho Chehab [Thu, 18 Apr 2013 23:53:23 +0000 (20:53 -0300)]
Revert "[media] mfd: Add chip properties handling code for SI476X MFD"
This reverts commit
a118e9c122969a924061b48b6cc6bb73ccc8de4c.
Requested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Mauro Carvalho Chehab [Thu, 18 Apr 2013 23:52:33 +0000 (20:52 -0300)]
Revert "[media] mfd: Add the main bulk of core driver for SI476x code"
This reverts commit
b40fe4f67de2c826868f408e03f2ef9fe39d85b9.
Conflicts:
drivers/mfd/si476x-i2c.c
Requested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Mauro Carvalho Chehab [Thu, 18 Apr 2013 23:51:00 +0000 (20:51 -0300)]
Revert "[media] mfd: Add commands abstraction layer for SI476X MFD"
This reverts commit
626b67c1ad90b450e0afbd1c277fd81ad64c5539.
Requested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Andrey Smirnov [Thu, 18 Apr 2013 23:46:08 +0000 (20:46 -0300)]
[media] v4l2: Add a V4L2 driver for SI476X MFD
This commit adds a driver that exposes all the radio related
functionality of the Si476x series of chips via the V4L2 subsystem.
[mchehab@redhat.com: change it to depends on MFD_SI476X_CORE instead of
selecting it; vidioc_s_register now uses const struct]
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Sarah Sharp [Sun, 14 Apr 2013 02:17:08 +0000 (19:17 -0700)]
Docs: Move ref to Frohwalt Egerer to end of REPORTING-BUGS
The document is largely not the same as the original that was crafted
from Frohwalt Egerer's document, but leave it in as a historical thank
you footnote.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Sarah Sharp [Sun, 14 Apr 2013 01:25:13 +0000 (18:25 -0700)]
Docs: Add a tips section to REPORTING-BUGS.
Lots of grumpy maintainers would love to have annoying newbies and
disorganized bug reporters read Eric S. Raymond's "How To Ask Questions
The Smart Way". Simon Tatham's "How to Report Bugs Effectively" is also
relevant.
It's likely no one will bother to read these, but it does give
maintainers something to point to.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Sarah Sharp [Sun, 14 Apr 2013 02:30:48 +0000 (19:30 -0700)]
Docs: Expectations for bug reporters and maintainers
Outline how often it's polite to ping kernel maintainers about bugs, and
suggest that kernel maintainers should respond to bugs in 1 to 5
business days.
Emphasize that regressions, userspace breakage, and kernel crashes are
exceptions to that rule. Suggest escalation to LKML and Linus if these
bugs are ignored during the merge window.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Carolyn Wyborny [Thu, 18 Apr 2013 22:21:30 +0000 (22:21 +0000)]
igb: Add support for i354 devices
This patch adds base support for new i354 devices. Loopback test is
unsupported for this release.
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Lior Levy [Sun, 3 Mar 2013 20:27:48 +0000 (20:27 +0000)]
igb: add support for spoofchk config
Add support for spoofchk configuration per VF via iproute2 tool.
Signed-off-by: Lior Levy <lior.levy@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Matthew Vick [Thu, 21 Feb 2013 03:32:52 +0000 (03:32 +0000)]
igb: Enable EEE LP advertisement
On EEE-capable devices, query the PHY to determine what the link partner is
advertising.
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jeff Kirsher [Sat, 23 Feb 2013 07:29:56 +0000 (07:29 +0000)]
igb: Fix code comments and whitespace
Aligns the multi-line code comments with the desired style for the
networking tree. Also cleaned up whitespace issues found during the
cleanup of code comments (i.e. remove unnecessary blank lines,
use tabs where possible, properly wrap lines and keep strings on a
single line)
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Akeem G. Abodunrin [Sat, 16 Feb 2013 07:09:06 +0000 (07:09 +0000)]
igb: Fix sparse warnings on function pointers
This patch fixes sparse warnings on function pointers that are not
defined as static.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Alexander Duyck [Tue, 12 Feb 2013 02:31:01 +0000 (02:31 +0000)]
igb: Use rx/tx_itr_setting when setting up initial value of itr
It turns out that the InterruptThrottleRate module parameter was only
having the effect of locking the ITR at the starting ITR value. This was
because the values stored in rx_itr_setting and tx_itr_setting were being
ignored when configuring the initial itr_val of the q_vector.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Alexander Duyck [Thu, 7 Feb 2013 08:55:46 +0000 (08:55 +0000)]
igb: Pull adapter out of main path in igb_xmit_frame_ring
We only need the adapter pointer in the case of ptp. As such we can pull the
adapter out of the main path and place it inside the if statement to avoid
the temptation of accessing the adapter pointer in the fast path.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Alexander Duyck [Fri, 1 Feb 2013 08:56:47 +0000 (08:56 +0000)]
igb: Mask off check of frag_off as we only want fragment offset
We were incorrectly checking the entire frag_off field when we only wanted the
fragment offset. As a result we were not pulling in TCP headers when the DNF
flag was set.
To correct that we will now check for frag off using the IP_OFFSET mask.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Akeem G. Abodunrin [Tue, 29 Jan 2013 10:15:31 +0000 (10:15 +0000)]
igb: random code and comments fix
This patch fixes code and comments as identified in the driver.
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Akeem G. Abodunrin [Tue, 29 Jan 2013 10:15:26 +0000 (10:15 +0000)]
igb: Implement support to power sfp cage and turn on I2C
Based on original patch from Aurélien Guillaume <footplus@gmail.com>
This patch adds support to turn on I2C, with sfp cage powered.
CC: Aurélien Guillaume <footplus@gmail.com>
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Akeem G. Abodunrin [Thu, 11 Apr 2013 06:36:35 +0000 (06:36 +0000)]
igb: Support to read and export SFF-8472/8079 data
This patch adds support to read and export SFF-8472/8079 (SFP data)
over i2c, through Ethtool.
v2: Changed implementation to accommodate any offset within SFF module
length boundary.
Reported-by: Aurélien Guillaume <footplus@gmail.com>
CC: Aurélien Guillaume <footplus@gmail.com>
CC: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Johannes Berg [Thu, 18 Apr 2013 23:02:55 +0000 (01:02 +0200)]
nl80211: allow using wdev identifiers to get scan results
Most dump callbacks, including the scan results one, use
the netdev to identify what to do, which is incorrect for
the P2P_DEVICE support, it needs to be able to get the
scan result from the wdev. Change all dumps to unify the
code, but ones other than scan don't really support being
executed on a wdev that has no netdev.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Aaro Koskinen [Tue, 9 Apr 2013 19:51:25 +0000 (22:51 +0300)]
mfd: retu: Add Tahvo support
Tahvo is a multi-function device on Nokia 770, implementing USB
transceiver and charge/battery control.
It's so close to Retu that a single driver can support both.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>