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cciss: fix residual count for block pc requests

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We must complete the full request, so store the request count and then set
the ->data_len to the residual count from the hardware.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2009-03-27 10:43:52 +01:00
parent 26308eab69
commit ac44e5b2ed
1 changed files with 9 additions and 1 deletions
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10
drivers/block/cciss.c
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@ -1287,6 +1287,7 @@ static void cciss_softirq_done(struct request *rq)
{
CommandList_struct *cmd = rq->completion_data;
ctlr_info_t *h = hba[cmd->ctlr];
unsigned int nr_bytes;
unsigned long flags;
u64bit temp64;
int i, ddir;
@ -1308,7 +1309,14 @@ static void cciss_softirq_done(struct request *rq)
printk("Done with %p\n", rq);
#endif /* CCISS_DEBUG */
if (blk_end_request(rq, (rq->errors == 0) ? 0 : -EIO, blk_rq_bytes(rq)))
/*
* Store the full size and set the residual count for pc requests
*/
nr_bytes = blk_rq_bytes(rq);
if (blk_pc_request(rq))
rq->data_len = cmd->err_info->ResidualCnt;
if (blk_end_request(rq, (rq->errors == 0) ? 0 : -EIO, nr_bytes))
BUG();
spin_lock_irqsave(&h->lock, flags);