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RDMA/uverbs: Silence shiftTooManyBitsSigned warning

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[ 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>
This commit is contained in:
Leon Romanovsky 2020-07-20 20:56:27 +03:00 • committed by Greg Kroah-Hartman
commit 564fdc2f8b
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/core/uverbs_cmd.c
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@ -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))