drm: use noop_llseek

The drm device drivers currently allow seeking on the
character device but never care about the actual
file position.

When we change the default llseek operation to be
no_llseek, calling llseek on a drm device would
return an error condition, which is an API change.

Explicitly setting noop_llseek lets us keep the
current API.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org

diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index 910c923..2861055 100644 (file)
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -136,6 +136,7 @@
 #ifdef CONFIG_COMPAT
                .compat_ioctl = i915_compat_ioctl,
 #endif
+               .llseek = noop_llseek,
                },
        .pci_driver = {
                .name = DRIVER_NAME,

diff --git a/drivers/gpu/drm/i810/i810_drv.c b/drivers/gpu/drm/i810/i810_drv.c
index b4250b2..fe69914 100644 (file)
--- a/drivers/gpu/drm/i810/i810_drv.c
+++ b/drivers/gpu/drm/i810/i810_drv.c
@@ -63,6 +63,7 @@ static struct drm_driver driver = {
                 .mmap = drm_mmap,
                 .poll = drm_poll,
                 .fasync = drm_fasync,
+                .llseek = noop_llseek,
        },
 
        .pci_driver = {

diff --git a/drivers/gpu/drm/i830/i830_drv.c b/drivers/gpu/drm/i830/i830_drv.c
index a5c66aa..5b6298b 100644 (file)
--- a/drivers/gpu/drm/i830/i830_drv.c
+++ b/drivers/gpu/drm/i830/i830_drv.c
@@ -74,6 +74,7 @@ static struct drm_driver driver = {
                 .mmap = drm_mmap,
                 .poll = drm_poll,
                 .fasync = drm_fasync,
+                .llseek = noop_llseek,
        },
 
        .pci_driver = {

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 216deb5..a6fdb48 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -547,6 +547,7 @@ static struct drm_driver driver = {
 #ifdef CONFIG_COMPAT
                 .compat_ioctl = i915_compat_ioctl,
 #endif
+                .llseek = noop_llseek,
        },
 
        .pci_driver = {

diff --git a/drivers/gpu/drm/mga/mga_drv.c b/drivers/gpu/drm/mga/mga_drv.c
index 26d0d8c..ac64f0b 100644 (file)
--- a/drivers/gpu/drm/mga/mga_drv.c
+++ b/drivers/gpu/drm/mga/mga_drv.c
@@ -75,6 +75,7 @@ static struct drm_driver driver = {
 #ifdef CONFIG_COMPAT
                .compat_ioctl = mga_compat_ioctl,
 #endif
+               .llseek = noop_llseek,
        },
        .pci_driver = {
                .name = DRIVER_NAME,

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index 1de5eb5..eb15345 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -393,6 +393,7 @@ static struct drm_driver driver = {
 #if defined(CONFIG_COMPAT)
                .compat_ioctl = nouveau_compat_ioctl,
 #endif
+               .llseek = noop_llseek,
        },
        .pci_driver = {
                .name = DRIVER_NAME,

diff --git a/drivers/gpu/drm/r128/r128_drv.c b/drivers/gpu/drm/r128/r128_drv.c
index 1e2971f..d42c76c 100644 (file)
--- a/drivers/gpu/drm/r128/r128_drv.c
+++ b/drivers/gpu/drm/r128/r128_drv.c
@@ -71,6 +71,7 @@ static struct drm_driver driver = {
 #ifdef CONFIG_COMPAT
                .compat_ioctl = r128_compat_ioctl,
 #endif
+               .llseek = noop_llseek,
        },
        .pci_driver = {
                .name = DRIVER_NAME,

diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 795403b..29c1237 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -219,6 +219,7 @@ static struct drm_driver driver_old = {
 #ifdef CONFIG_COMPAT
                 .compat_ioctl = radeon_compat_ioctl,
 #endif
+                .llseek = noop_llseek,
        },
 
        .pci_driver = {

diff --git a/drivers/gpu/drm/savage/savage_drv.c b/drivers/gpu/drm/savage/savage_drv.c
index 021de44..2a2830f 100644 (file)
--- a/drivers/gpu/drm/savage/savage_drv.c
+++ b/drivers/gpu/drm/savage/savage_drv.c
@@ -54,6 +54,7 @@ static struct drm_driver driver = {
                 .mmap = drm_mmap,
                 .poll = drm_poll,
                 .fasync = drm_fasync,
+                .llseek = noop_llseek,
        },
 
        .pci_driver = {

diff --git a/drivers/gpu/drm/sis/sis_drv.c b/drivers/gpu/drm/sis/sis_drv.c
index 776bf9e..4bb10ef 100644 (file)
--- a/drivers/gpu/drm/sis/sis_drv.c
+++ b/drivers/gpu/drm/sis/sis_drv.c
@@ -83,6 +83,7 @@ static struct drm_driver driver = {
                 .mmap = drm_mmap,
                 .poll = drm_poll,
                 .fasync = drm_fasync,
+                .llseek = noop_llseek,
        },
        .pci_driver = {
                 .name = DRIVER_NAME,

diff --git a/drivers/gpu/drm/tdfx/tdfx_drv.c b/drivers/gpu/drm/tdfx/tdfx_drv.c
index ec5a43e..640567e 100644 (file)
--- a/drivers/gpu/drm/tdfx/tdfx_drv.c
+++ b/drivers/gpu/drm/tdfx/tdfx_drv.c
@@ -52,6 +52,7 @@ static struct drm_driver driver = {
                 .mmap = drm_mmap,
                 .poll = drm_poll,
                 .fasync = drm_fasync,
+                .llseek = noop_llseek,
        },
        .pci_driver = {
                 .name = DRIVER_NAME,

diff --git a/drivers/gpu/drm/via/via_drv.c b/drivers/gpu/drm/via/via_drv.c
index 7a1b210..b8984a5 100644 (file)
--- a/drivers/gpu/drm/via/via_drv.c
+++ b/drivers/gpu/drm/via/via_drv.c
@@ -62,6 +62,7 @@ static struct drm_driver driver = {
                .mmap = drm_mmap,
                .poll = drm_poll,
                .fasync = drm_fasync,
+               .llseek = noop_llseek,
                },
        .pci_driver = {
                .name = DRIVER_NAME,

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 72ec2e2..d237190 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -745,6 +745,7 @@ static struct drm_driver driver = {
 #if defined(CONFIG_COMPAT)
                 .compat_ioctl = drm_compat_ioctl,
 #endif
+                .llseek = noop_llseek,
                 },
        .pci_driver = {
                       .name = VMWGFX_DRIVER_NAME,