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Message-ID: <Pine.LNX.4.64.0912041940110.3981@axis700.grange> Date: Fri, 4 Dec 2009 19:44:41 +0100 (CET) From: Guennadi Liakhovetski <g.liakhovetski@....de> To: linux-kernel@...r.kernel.org cc: Dan Williams <dan.j.williams@...el.com>, linux-sh@...r.kernel.org Subject: [PATCH 1/5] 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@....de> --- 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 b3b065c..f5fae12 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... */ -- 1.6.2.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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