1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c
index 41ca721d2523..ebfe038d859e 100644
--- a/drivers/block/viodasd.c
+++ b/drivers/block/viodasd.c
@@ -69,7 +69,7 @@ MODULE_LICENSE("GPL");
 enum {
         PARTITION_SHIFT = 3,
         MAX_DISKNO = HVMAXARCHITECTEDVIRTUALDISKS,
-        MAX_DISK_NAME = sizeof(((struct gendisk *)0)->disk_name)
+        MAX_DISK_NAME = FIELD_SIZEOF(struct gendisk, disk_name)
 };
 
 static DEFINE_SPINLOCK(viodasd_spinlock);