From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>,
kernel test robot <lkp@intel.com>,
linux-rdma@vger.kernel.org
Subject: [PATCH rdma-next v1 2/2] RDMA/uverbs: Silence shiftTooManyBitsSigned warning
Date: Mon, 20 Jul 2020 20:56:27 +0300 [thread overview]
Message-ID: <20200720175627.1273096-3-leon@kernel.org> (raw)
In-Reply-To: <20200720175627.1273096-1-leon@kernel.org>
From: Leon Romanovsky <leonro@mellanox.com>
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@intel.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
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 c36f22ab9bae..896e2cc046b0 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
next prev parent reply other threads:[~2020-07-20 17:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 17:56 [PATCH rdma-next v1 0/2] Fix warnings reported by kbuild Leon Romanovsky
2020-07-20 17:56 ` [PATCH rdma-next v1 1/2] RDMA/uverbs: Remove redundant assignments Leon Romanovsky
2020-07-20 17:56 ` Leon Romanovsky [this message]
2020-07-24 19:54 ` [PATCH rdma-next v1 0/2] Fix warnings reported by kbuild Jason Gunthorpe
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