From: Bob Pearson <rpearsonhpe@gmail.com>
To: Leon Romanovsky <leon@kernel.org>, Jason Gunthorpe <jgg@nvidia.com>
Cc: Leon Romanovsky <leonro@nvidia.com>,
Dan Carpenter <error27@gmail.com>,
linux-rdma@vger.kernel.org, Zhu Yanjun <zyjzyj2000@gmail.com>
Subject: Re: [PATCH rdma-next] RDMA/rxe: Properly check tasklet state
Date: Wed, 29 Mar 2023 14:15:30 -0500 [thread overview]
Message-ID: <e74f86fa-7332-8503-0660-4568c730c5df@gmail.com> (raw)
In-Reply-To: <1a6376525c40454282a14ab659de0b17b02fe523.1680113901.git.leon@kernel.org>
On 3/29/23 13:18, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@nvidia.com>
>
> Fix the following smatch error:
>
> drivers/infiniband/sw/rxe/rxe_task.c:24 __reserve_if_idle()
> warn: bitwise AND condition is false here
>
> Fixes: d94671632572 ("RDMA/rxe: Rewrite rxe_task.c")
> Reported-by: Dan Carpenter <error27@gmail.com>
> Link: https://lore.kernel.org/all/480b32b6-0f1c-4646-9ecc-e0760004cd24@kili.mountain
> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
> ---
> drivers/infiniband/sw/rxe/rxe_task.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/infiniband/sw/rxe/rxe_task.c b/drivers/infiniband/sw/rxe/rxe_task.c
> index fea9a517c8d9..48c89987137c 100644
> --- a/drivers/infiniband/sw/rxe/rxe_task.c
> +++ b/drivers/infiniband/sw/rxe/rxe_task.c
> @@ -21,7 +21,7 @@ static bool __reserve_if_idle(struct rxe_task *task)
> {
> WARN_ON(rxe_read(task->qp) <= 0);
>
> - if (task->tasklet.state & TASKLET_STATE_SCHED)
> + if (task->tasklet.state == TASKLET_STATE_SCHED)
> return false;
>
> if (task->state == TASK_STATE_IDLE) {
> @@ -46,7 +46,7 @@ static bool __reserve_if_idle(struct rxe_task *task)
> */
> static bool __is_done(struct rxe_task *task)
> {
> - if (task->tasklet.state & TASKLET_STATE_SCHED)
> + if (task->tasklet.state == TASKLET_STATE_SCHED)
> return false;
>
> if (task->state == TASK_STATE_IDLE ||
Leon, This is not correct either. I am about to fix this. -- Bob
next prev parent reply other threads:[~2023-03-29 19:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-29 18:18 [PATCH rdma-next] RDMA/rxe: Properly check tasklet state Leon Romanovsky
2023-03-29 19:15 ` Bob Pearson [this message]
2023-03-29 19:17 ` Leon Romanovsky
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