scsi: remove the second argument of k[un]map_atomic()

Signed-off-by: Cong Wang <amwang@redhat.com>
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 15eefa1..4d39a9f 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -670,10 +670,10 @@
 			struct scatterlist *sg;
 
 			sg = scsi_sglist(cmd);
-			buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
+			buf = kmap_atomic(sg_page(sg)) + sg->offset;
 
 			memset(buf, 0, cmd->cmnd[4]);
-			kunmap_atomic(buf - sg->offset, KM_IRQ0);
+			kunmap_atomic(buf - sg->offset);
 
 			cmd->result = (DID_OK << 16);
 			cmd->scsi_done(cmd);