From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: ohad@wizery.com, bjorn.andersson@linaro.org, robh+dt@kernel.org
Cc: arnaud.pouliquen@st.com, linux-remoteproc@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 15/17] remoteproc: Properly deal with a start request when attached
Date: Fri, 18 Dec 2020 10:32:26 -0700 [thread overview]
Message-ID: <20201218173228.2277032-16-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <20201218173228.2277032-1-mathieu.poirier@linaro.org>
This patch takes into account scenarios where a remote processor
has been attached to when receiving a "start" command from sysfs.
As with the "running" case, the command can't be carried out if the
remote processor is already in operation.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
---
drivers/remoteproc/remoteproc_cdev.c | 3 ++-
drivers/remoteproc/remoteproc_sysfs.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/remoteproc/remoteproc_cdev.c b/drivers/remoteproc/remoteproc_cdev.c
index d06f8d4919c7..61541bc7d26c 100644
--- a/drivers/remoteproc/remoteproc_cdev.c
+++ b/drivers/remoteproc/remoteproc_cdev.c
@@ -32,7 +32,8 @@ static ssize_t rproc_cdev_write(struct file *filp, const char __user *buf, size_
return -EFAULT;
if (!strncmp(cmd, "start", len)) {
- if (rproc->state == RPROC_RUNNING)
+ if (rproc->state == RPROC_RUNNING ||
+ rproc->state == RPROC_ATTACHED)
return -EBUSY;
ret = rproc_boot(rproc);
diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c
index 96751c087585..298052c9d068 100644
--- a/drivers/remoteproc/remoteproc_sysfs.c
+++ b/drivers/remoteproc/remoteproc_sysfs.c
@@ -223,7 +223,8 @@ static ssize_t state_store(struct device *dev,
int ret = 0;
if (sysfs_streq(buf, "start")) {
- if (rproc->state == RPROC_RUNNING)
+ if (rproc->state == RPROC_RUNNING ||
+ rproc->state == RPROC_ATTACHED)
return -EBUSY;
ret = rproc_boot(rproc);
--
2.25.1
next prev parent reply other threads:[~2020-12-18 17:34 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-18 17:32 [PATCH v4 00/17] remoteproc: Add support for detaching a rproc Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 01/17] dt-bindings: remoteproc: Add bindind to support autonomous processors Mathieu Poirier
2021-01-20 15:53 ` Rob Herring
2020-12-18 17:32 ` [PATCH v4 02/17] remoteproc: Re-check state in rproc_shutdown() Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 03/17] remoteproc: Remove useless check in rproc_del() Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 04/17] remoteproc: Rename function rproc_actuate() Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 05/17] remoteproc: Add new get_loaded_rsc_table() remoteproc operation Mathieu Poirier
2021-01-27 8:44 ` Arnaud POULIQUEN
2021-01-29 21:37 ` Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 06/17] remoteproc: stm32: Move resource table setup to rproc_ops Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 07/17] remoteproc: Add new RPROC_ATTACHED state Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 08/17] remoteproc: Properly represent the attached state Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 09/17] remoteproc: Properly deal with a kernel panic when attached Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 10/17] remoteproc: Add new detach() remoteproc operation Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 11/17] remoteproc: Introduce function __rproc_detach() Mathieu Poirier
2021-01-27 8:46 ` Arnaud POULIQUEN
2021-01-29 22:17 ` Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 12/17] remoteproc: Introduce function rproc_detach() Mathieu Poirier
2021-01-27 8:50 ` Arnaud POULIQUEN
2021-01-29 22:31 ` Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 13/17] remoteproc: Add return value to function rproc_shutdown() Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 14/17] remoteproc: Properly deal with a stop request when attached Mathieu Poirier
2020-12-18 17:32 ` Mathieu Poirier [this message]
2020-12-18 17:32 ` [PATCH v4 16/17] remoteproc: Properly deal with detach request Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 17/17] remoteproc: Refactor rproc delete and cdev release path Mathieu Poirier
2021-01-27 8:56 ` Arnaud POULIQUEN
2021-01-27 9:21 ` [PATCH v4 00/17] remoteproc: Add support for detaching a rproc Arnaud POULIQUEN
2021-02-02 0:49 ` Mathieu Poirier
2021-02-02 8:54 ` Arnaud POULIQUEN
2021-02-02 22:42 ` Mathieu Poirier
2021-02-03 7:58 ` Arnaud POULIQUEN
2021-02-08 23:43 ` Mathieu Poirier
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