[PATCH] ata_piix: kill spurious assignment in piix_sata_probe()

In piix_sata_probe(), mask gets assigned unnecessarily at the
beginning of the function.  Kill the assignment.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 4933ba2..8e05296 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -415,9 +415,6 @@
 	int orig_mask, mask, i;
 	u8 pcs;
 
-	mask = (PIIX_PORT_PRESENT << ap->hard_port_no) |
-	       (PIIX_PORT_ENABLED << ap->hard_port_no);
-
 	pci_read_config_byte(pdev, ICH5_PCS, &pcs);
 	orig_mask = (int) pcs & 0xff;