From: Leon Romanovsky leonro@mellanox.com
[ Upstream commit 9b8d846924856570625b93f83ae0624391193bce ]
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)); ^ Link: https://lore.kernel.org/r/20200720175627.1273096-3-leon@kernel.org Reported-by: kernel test robot lkp@intel.com Signed-off-by: Leon Romanovsky leonro@mellanox.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Stable-dep-of: 8de8482fe573 ("RDMA/mlx5: Fix validation of max_rd_atomic caps for DC") Signed-off-by: Sasha Levin sashal@kernel.org --- 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 d413dafb9211..39cbb853f913 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1952,7 +1952,7 @@ 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))