scsi: hpsa: hpsa_ioctl(): Tidy up a bit

Link: https://lore.kernel.org/r/[email protected]
Acked-by: Don Brace <[email protected]>
Tested-by: Don Brace <[email protected]>
Signed-off-by: Al Viro <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

Author: Al Viro

drivers/scsi/hpsa.c

@@ -6577,14 +6577,11 @@ static void check_ioctl_unit_attention(struct ctlr_info *h,
  * ioctl
  */
 static int hpsa_ioctl(struct scsi_device *dev, unsigned int cmd,
-		      void __user *arg)
+		      void __user *argp)
 {
-	struct ctlr_info *h;
-	void __user *argp = (void __user *)arg;
+	struct ctlr_info *h = sdev_to_hba(dev);
 	int rc;
 
-	h = sdev_to_hba(dev);
-
 	switch (cmd) {
 	case CCISS_DEREGDISK:
 	case CCISS_REGNEWDISK: