Commit dfd7a3db authored Jan 26, 2007 by Tejun Heo Committed by Jeff Garzik Jan 26, 2007

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>

parent d0259872

drivers/ata/ahci.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);

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