aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/libata-core.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index d8f77f2a5af..909568f7a72 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1576,6 +1576,23 @@ void sata_phy_reset(struct ata_port *ap)
}
/**
+ * ata_dev_pair - return other device on cable
+ * @ap: port
+ * @adev: device
+ *
+ * Obtain the other device on the same cable, or if none is
+ * present NULL is returned
+ */
+
+struct ata_device *ata_dev_pair(struct ata_port *ap, struct ata_device *adev)
+{
+ struct ata_device *pair = &ap->device[1 - adev->devno];
+ if (!ata_dev_present(pair))
+ return NULL;
+ return pair;
+}
+
+/**
* ata_port_disable - Disable port.
* @ap: Port to be disabled.
*