From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Fix reported by kbuild warning.
drivers/infiniband/core/uverbs_cmd.c:1897:47: warning: Shifting
signed 32-bit value by 31 bits is undefined
behaviour [shiftTooManyBitsSigned]
BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
^
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/uverbs_cmd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 7d2b4258f573..51f8e5464f10 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -1892,7 +1892,7 @@ static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs)
* Last bit is reserved for extending the attr_mask by
* using another field.
*/
- BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
+ BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1ULL << 31));
if (cmd.base.attr_mask &
~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1))
--
2.26.2
