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alistair23-linux
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ahci: use 0x80 as wait stat value instead of 0xff 

Before hardreset, ahci initialized stat part of received FIS area to
0xff to wait for the first D2H Reg FIS which would change the value to
device ready state.  This used to work but now libata considers status
value of 0xff as device not present making this wait prone to failure.

This patch makes ahci use 0x80 for the wait stat value instead of
0xff to fix the above problem.

Signed-off-by: Tejun Heo <htejun@gmail.com>

 drivers/ata/ahci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Signed-off-by: Jeff Garzik <jeff@garzik.org>
hifive-unleashed-5.1
Tejun Heo 2007-01-26 15:37:20 +09:00 committed by Jeff Garzik
parent d025987217
commit dfd7a3db38
1 changed files with 1 additions and 1 deletions
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2
drivers/ata/ahci.c
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@ -903,7 +903,7 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class)
/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(ap->device, &tf);
tf.command = 0xff;
tf.command = 0x80;
ata_tf_to_fis(&tf, d2h_fis, 0);
rc = sata_std_hardreset(ap, class);