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>
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index efa8773..741065c 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -2275,7 +2275,7 @@
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 */