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-rw-r--r--drivers/scsi/libata-core.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 5d0adfa4610..5dbcf0cf4a1 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);