From: Tejun Heo <htejun@gmail.com>
Date: Mon, 15 May 2006 11:57:25 +0000 (+0900)
Subject: [PATCH] ahci: hardreset classification fix
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e4fac92ae744cd5d5c3c1774825788e6b91a5965;p=openwrt%2Fstaging%2Fblogic.git

[PATCH] ahci: hardreset classification fix

AHCI calls ata_dev_classify() even when no device is attached which
results in false class code.  Fix it.

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

diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index d23f00230a76..c33255404ee5 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -670,7 +670,7 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class)
 	rc = sata_std_hardreset(ap, class);
 	ahci_start_engine(ap);
 
-	if (rc == 0)
+	if (rc == 0 && sata_dev_present(ap))
 		*class = ahci_dev_classify(ap);
 	if (*class == ATA_DEV_UNKNOWN)
 		*class = ATA_DEV_NONE;