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[libata] sata_mv: errata check buglet fix

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Fix a buglet; the errata check below this code is assuming the value in
the sstatus variable is what was pulled out of the SCR_STATUS register.
However, the status checks in the timeout loop clobber everything
but the first 4 bits of sstatus, so the errata checks are invalid.

This patch changes it to not clobber SStatus.

Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Andres Salomon 2006-09-11 08:51:05 -04:00 committed by Jeff Garzik
parent c336923b66
commit 62f1d0e6de
1 changed files with 1 additions and 2 deletions
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3
drivers/scsi/sata_mv.c
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@ -1961,8 +1961,7 @@ static void __mv_phy_reset(struct ata_port *ap, int can_sleep)
timeout = jiffies + msecs_to_jiffies(200);
do {
sata_scr_read(ap, SCR_STATUS, &sstatus);
sstatus &= 0x3;
if ((sstatus == 3) || (sstatus == 0))
if (((sstatus & 0x3) == 3) || ((sstatus & 0x3) == 0))
break;
__msleep(1, can_sleep);