diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index 6ccdc96c..a09b2d3 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -1432,15 +1432,10 @@
  */
 static irqreturn_t intr(int irqno, void *dev_id)
 {
-	struct Scsi_Host *shpnt = (struct Scsi_Host *)dev_id;
+	struct Scsi_Host *shpnt = dev_id;
 	unsigned long flags;
 	unsigned char rev, dmacntrl0;
 
-	if (!shpnt) {
-		printk(KERN_ERR "aha152x: catched interrupt %d for unknown controller.\n", irqno);
-		return IRQ_NONE;
-	}
-
 	/*
 	 * Read a couple of registers that are known to not be all 1's. If
 	 * we read all 1's (-1), that means that either: