[PATCH] libata: re-initialize parameters before configuring

In ata_dev_configure(), reinitialize parameters before configuring.
This change is for revalidation and hotplug.  As ata_dev_configure()
can be entered multiple times, parameters need to be reinitialized.

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

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index b710fc480740..59828490a750 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1086,6 +1086,15 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev)
 
         DPRINTK("ENTER, host %u, dev %u\n", ap->id, dev->devno);
 
+        /* initialize to-be-configured parameters */
+        dev->flags = 0;
+        dev->max_sectors = 0;
+        dev->cdb_len = 0;
+        dev->n_sectors = 0;
+        dev->cylinders = 0;
+        dev->heads = 0;
+        dev->sectors = 0;
+
         /*
          * common ATA, ATAPI feature tests
          */