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libata: fix reporting of drained bytes when clearing DRQ 

When we drain data from a device to clear DRQ during error recovery,
the number of bytes reported as drained is too low by a factor of 2
because the count is actually reporting the number of words drained,
not bytes. Fix this.

Signed-off-by: Robert Hancock <hancockrwd@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Robert Hancock 2009-12-08 20:48:10 -06:00 committed by Jeff Garzik
parent b2dec48cca
commit 9a8fd68b15
1 changed files with 1 additions and 1 deletions
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2
drivers/ata/libata-sff.c
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@ -2275,7 +2275,7 @@ void ata_sff_drain_fifo(struct ata_queued_cmd *qc)
ap = qc->ap;
/* Drain up to 64K of data before we give up this recovery method */
for (count = 0; (ap->ops->sff_check_status(ap) & ATA_DRQ)
&& count < 32768; count++)
&& count < 65536; count += 2)
ioread16(ap->ioaddr.data_addr);
/* Can become DEBUG later */