diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index a203896f204f31d38c40c0bc5867e85899f3ea5e..47c43386786b13229f4fbeb5cbdbfe03a2009804 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -24,7 +24,7 @@
 #include <linux/msi.h>
 #include <linux/slab.h>
 
-#define DEV_ID_SHIFT	24
+#define DEV_ID_SHIFT	21
 #define MAX_DEV_MSIS	(1 << (32 - DEV_ID_SHIFT))
 
 /*