[PATCH] libata: revalidate after transfer mode configuration

Revalidate device after transfer mode configuration.  This also makes
dev->id up-to-date.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 5d0adfa4610a..5dbcf0cf4a10 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1625,6 +1625,12 @@ static void ata_dev_set_mode(struct ata_port *ap, struct ata_device *dev)
         idx = ofs + dev->xfer_shift;
         WARN_ON(idx >= ARRAY_SIZE(xfer_mode_str));
 
+        if (ata_dev_revalidate(ap, dev, 0)) {
+                printk(KERN_ERR "ata%u: failed to revalidate after set "
+                       "xfermode, disabled\n", ap->id);
+                ata_port_disable(ap);
+        }
+
         DPRINTK("idx=%d xfer_shift=%u, xfer_mode=0x%x, base=0x%x, offset=%d\n",
                 idx, dev->xfer_shift, (int)dev->xfer_mode, (int)base, ofs);