[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 d23f00230a76ae858c431bcc4023d790bfc4faa7..c33255404ee5d0d309a46fca429a76d75a657aab 100644 (file)
--- 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;