From: Felipe Franciosi <felipe@paradoxo.org>
Date: Thu, 13 Mar 2014 14:34:20 +0000 (+0000)
Subject: mtip32xx: Set queue bounce limit
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=981752df71cfdab8096cb44a76a9b597cdde8796;p=linux-edison.git

mtip32xx: Set queue bounce limit

commit 1044b1bb9278f2e656a1a7b63dc24a59506540aa upstream.

We need to set the queue bounce limit during the device initialization to
prevent excessive bouncing on 32 bit architectures.

Signed-off-by: Felipe Franciosi <felipe@paradoxo.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 20dd52a2f92..6e514583aa7 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -4040,6 +4040,7 @@ skip_create_disk:
 	blk_queue_max_hw_sectors(dd->queue, 0xffff);
 	blk_queue_max_segment_size(dd->queue, 0x400000);
 	blk_queue_io_min(dd->queue, 4096);
+	blk_queue_bounce_limit(dd->queue, dd->pdev->dma_mask);
 
 	/*
 	 * write back cache is not supported in the device. FUA depends on