[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>

1 files changed, 1 insertions, 1 deletions

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;