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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2009-12-04 21:44:41 +0300
committerDan Williams <dan.j.williams@intel.com>2009-12-11 09:25:58 +0300
commitddb4f0f0e05871c7ac540cc778993c06ff53b765 (patch)
tree6880d9690d296bd2cade679e46ccca8986deab83 /drivers/dma
parent61f135b92f4758bc4d4767cd0a5d2da954e27f14 (diff)
downloadlinux-ddb4f0f0e05871c7ac540cc778993c06ff53b765.tar.xz
sh: DMA driver has to specify its alignment requirements
The SH DMA driver by default uses 32-byte transfers, in this mode buffers and sizes have to be 32-byte aligned. Specifying this requirement also fixes Oopses with dmatest. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/shdma.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index b3b065c4e5c1..f5fae1258b54 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -677,6 +677,8 @@ static int __init sh_dmae_probe(struct platform_device *pdev)
shdev->common.device_is_tx_complete = sh_dmae_is_complete;
shdev->common.device_issue_pending = sh_dmae_memcpy_issue_pending;
shdev->common.dev = &pdev->dev;
+ /* Default transfer size of 32 bytes requires 32-byte alignment */
+ shdev->common.copy_align = 5;
#if defined(CONFIG_CPU_SH4)
/* Non Mix IRQ mode SH7722/SH7730 etc... */