[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 d23f002..c332554 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -670,7 +670,7 @@
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;