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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2009-12-04 19:44:41 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-12-10 23:25:58 -0700 |
| commit | ddb4f0f0e05871c7ac540cc778993c06ff53b765 (patch) | |
| tree | 6880d9690d296bd2cade679e46ccca8986deab83 /drivers/dma/shdma.c | |
| parent | 61f135b92f4758bc4d4767cd0a5d2da954e27f14 (diff) | |
| download | linux-stable-ddb4f0f0e05871c7ac540cc778993c06ff53b765.tar.gz linux-stable-ddb4f0f0e05871c7ac540cc778993c06ff53b765.tar.bz2 linux-stable-ddb4f0f0e05871c7ac540cc778993c06ff53b765.zip | |
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/shdma.c')
| -rw-r--r-- | drivers/dma/shdma.c | 2 |
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... */ |