Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

sh: DMA driver has to specify its alignment requirements

Browse source 
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>
This commit is contained in:
Guennadi Liakhovetski 2009-12-04 19:44:41 +01:00 committed by Dan Williams
parent 61f135b92f
commit ddb4f0f0e0
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/dma/shdma.c
View file

@ -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... */