From: Peng Fan <peng.fan@nxp.com>
To: Mathieu Poirier <mathieu.poirier@linaro.org>,
"bjorn.andersson@linaro.org" <bjorn.andersson@linaro.org>,
"ohad@wizery.com" <ohad@wizery.com>
Cc: "linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH 01/13] remoteproc: Re-check state in rproc_shutdown()
Date: Thu, 15 Oct 2020 01:28:40 +0000 [thread overview]
Message-ID: <DB6PR0402MB2760DB90DA376F4BB2DBB9D888020@DB6PR0402MB2760.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <20200826164529.224476-2-mathieu.poirier@linaro.org>
> Subject: [PATCH 01/13] remoteproc: Re-check state in rproc_shutdown()
>
> The state of the remote processor may have changed between the time a call
> to rproc_shutdown() was made and the time it is executed. To avoid moving
> forward with an operation that may have been cancelled, recheck while
> holding the mutex.
>
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
> ---
> drivers/remoteproc/remoteproc_core.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/remoteproc/remoteproc_core.c
> b/drivers/remoteproc/remoteproc_core.c
> index 7f90eeea67e2..fb2632cbd2df 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -1834,6 +1834,9 @@ void rproc_shutdown(struct rproc *rproc)
> return;
> }
>
> + if (rproc->state != RPROC_RUNNING)
> + goto out;
> +
> /* if the remote proc is still needed, bail out */
> if (!atomic_dec_and_test(&rproc->power))
> goto out;
> --
Reviewed-by: Peng Fan <peng.fan@nxp.com>
next prev parent reply other threads:[~2020-10-15 1:28 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-26 16:45 [PATCH 00/13] remoteproc: Add support for detaching from rproc Mathieu Poirier
2020-08-26 16:45 ` [PATCH 01/13] remoteproc: Re-check state in rproc_shutdown() Mathieu Poirier
2020-10-15 1:28 ` Peng Fan [this message]
2020-08-26 16:45 ` [PATCH 02/13] remoteproc: Remove useless check in rproc_del() Mathieu Poirier
2020-10-15 1:29 ` Peng Fan
2020-08-26 16:45 ` [PATCH 03/13] remoteproc: Add new RPROC_ATTACHED state Mathieu Poirier
2020-10-15 1:31 ` Peng Fan
2020-08-26 16:45 ` [PATCH 04/13] remoteproc: Properly represent the attached state Mathieu Poirier
2020-10-15 1:33 ` Peng Fan
2020-08-26 16:45 ` [PATCH 05/13] remoteproc: Add new detach() remoteproc operation Mathieu Poirier
2020-10-15 1:37 ` Peng Fan
2020-10-22 21:51 ` Mathieu Poirier
2020-08-26 16:45 ` [PATCH 06/13] remoteproc: Introduce function __rproc_detach() Mathieu Poirier
2020-10-15 1:39 ` Peng Fan
2020-08-26 16:45 ` [PATCH 07/13] remoteproc: Introduce function rproc_detach() Mathieu Poirier
2020-10-15 1:52 ` Peng Fan
2020-10-22 21:55 ` Mathieu Poirier
2020-08-26 16:45 ` [PATCH 08/13] remoteproc: Rename function rproc_actuate() Mathieu Poirier
2020-10-15 2:15 ` Peng Fan
2020-08-26 16:45 ` [PATCH 09/13] remoteproc: Add return value to function rproc_shutdown() Mathieu Poirier
2020-10-15 2:21 ` Peng Fan
2020-08-26 16:45 ` [PATCH 10/13] remoteproc: Properly deal with a stop request when attached Mathieu Poirier
2020-10-15 2:29 ` Peng Fan
2020-08-26 16:45 ` [PATCH 11/13] remoteproc: Properly deal with detach request Mathieu Poirier
2020-10-15 2:30 ` Peng Fan
2020-08-26 16:45 ` [PATCH 12/13] remoteproc: Refactor rproc delete and cdev release path Mathieu Poirier
2020-10-15 2:31 ` Peng Fan
2020-08-26 16:45 ` [PATCH 13/13] remoteproc: Properly deal with a kernel panic when attached Mathieu Poirier
2020-10-15 2:28 ` Peng Fan
2020-09-01 16:55 ` [PATCH 00/13] remoteproc: Add support for detaching from rproc Arnaud POULIQUEN
2020-09-01 18:02 ` Mathieu Poirier
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