skd: Submit requests to firmware before triggering the doorbell

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Ensure that the members of struct skd_msg_buf have been transferred
to the PCIe adapter before the doorbell is triggered. This patch
avoids that I/O fails sporadically and that the following error
message is reported:

(skd0:STM000196603:[0000:00:09.0]): Completion mismatch comp_id=0x0000 skreq=0x0400 new=0x0000

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

...

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Bart Van Assche 2017-08-17 13:12:46 -07:00 • committed by Jens Axboe

parent 7277cc67b3

commit 5fbd545cd3

1 changed files with 6 additions and 0 deletions

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6

drivers/block/skd_main.c

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