rsxx: Restructured DMA cancel scheme.

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Before, DMAs would never be cancelled if there was a data stall
or an EEH Permenant failure which would cause an unrecoverable
I/O hang.

The DMA cancellation mechanism has been modified to fix
these issues and allows DMAs to be cancelled during the
above mentioned events.

Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

...

This commit is contained in:

Philip J Kelleher 2013-06-18 14:36:26 -05:00 • committed by Jens Axboe

parent a3299ab185

commit 0ab4743ebc

4 changed files with 95 additions and 93 deletions

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17

drivers/block/rsxx/core.c

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6

drivers/block/rsxx/dev.c

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161

drivers/block/rsxx/dma.c

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4

drivers/block/rsxx/rsxx_priv.h

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