diff options
| author | Simon Guinot <sguinot@lacie.com> | 2010-09-17 23:33:51 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2010-09-23 23:14:22 +0200 |
| commit | cc60f8878eab892c03d06b10f389232b9b66bd83 (patch) | |
| tree | 1f2cc0671c1f84c8928c261700f370771d510cbb /include | |
| parent | missing inline keyword for static function in linux/dmaengine.h (diff) | |
| download | linux-cc60f8878eab892c03d06b10f389232b9b66bd83.tar.xz linux-cc60f8878eab892c03d06b10f389232b9b66bd83.zip | |
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 <sguinot@lacie.com>
Tested-by: Luc Saillard <luc@saillard.org>
Acked-by: saeed bishara <saeed.bishara@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions