path: root/drivers/dma/dmaengine.c
diff options
authorSimon Guinot <>2010-09-17 23:33:51 +0200
committerDan Williams <>2010-09-23 14:14:22 -0700
commitcc60f8878eab892c03d06b10f389232b9b66bd83 (patch)
tree1f2cc0671c1f84c8928c261700f370771d510cbb /drivers/dma/dmaengine.c
parentd3f3cf859db17cc5f8156c5bfcd032413e44483b (diff)
dmaengine: fix interrupt clearing for mv_xor
When using simultaneously the two DMA channels on a same engine, some transfers are never completed. For example, an endless lock can occur while writing heavily on a RAID5 array (with async-tx offload support enabled). Note that this issue can also be reproduced by using the DMA test client. On a same engine, the interrupt cause register is shared between two DMA channels. This patch make sure that the cause bit is only cleared for the requested channel. Signed-off-by: Simon Guinot <> Tested-by: Luc Saillard <> Acked-by: saeed bishara <> Cc: <> Signed-off-by: Dan Williams <>
Diffstat (limited to 'drivers/dma/dmaengine.c')
0 files changed, 0 insertions, 0 deletions