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| author | Suman Anna <s-anna@ti.com> | 2022-02-13 14:12:42 -0600 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2022-03-11 14:31:55 -0600 |
| commit | c13b780c4597e1e6cee3154053a196aa329b1367 (patch) | |
| tree | 417f2b40c25c0ad2a681ad46718a836f509e8322 /drivers/remoteproc | |
| parent | 8d9be5c6bdcda9e29597d3fbb24d1f6699da4616 (diff) | |
| download | linux-stable-c13b780c4597e1e6cee3154053a196aa329b1367.tar.gz linux-stable-c13b780c4597e1e6cee3154053a196aa329b1367.tar.bz2 linux-stable-c13b780c4597e1e6cee3154053a196aa329b1367.zip | |
remoteproc: Change rproc_shutdown() to return a status
The rproc_shutdown() function is currently not returning any
error code, and any failures within rproc_stop() are not passed
back to the users. Change the signature to return a success value
back to the callers.
The remoteproc sysfs and cdev interfaces are also updated to
return back this status to userspace.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220213201246.25952-2-s-anna@ti.com
Diffstat (limited to 'drivers/remoteproc')
| -rw-r--r-- | drivers/remoteproc/remoteproc_cdev.c | 2 | ||||
| -rw-r--r-- | drivers/remoteproc/remoteproc_core.c | 9 | ||||
| -rw-r--r-- | drivers/remoteproc/remoteproc_sysfs.c | 2 |
3 files changed, 8 insertions, 5 deletions
diff --git a/drivers/remoteproc/remoteproc_cdev.c b/drivers/remoteproc/remoteproc_cdev.c index 4ad98b0b8caa..906ff3c4dfdd 100644 --- a/drivers/remoteproc/remoteproc_cdev.c +++ b/drivers/remoteproc/remoteproc_cdev.c @@ -42,7 +42,7 @@ static ssize_t rproc_cdev_write(struct file *filp, const char __user *buf, size_ rproc->state != RPROC_ATTACHED) return -EINVAL; - rproc_shutdown(rproc); + ret = rproc_shutdown(rproc); } else if (!strncmp(cmd, "detach", len)) { if (rproc->state != RPROC_ATTACHED) return -EINVAL; diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 69f51acf235e..c510125769b9 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -2061,16 +2061,18 @@ EXPORT_SYMBOL(rproc_boot); * which means that the @rproc handle stays valid even after rproc_shutdown() * returns, and users can still use it with a subsequent rproc_boot(), if * needed. + * + * Return: 0 on success, and an appropriate error value otherwise */ -void rproc_shutdown(struct rproc *rproc) +int rproc_shutdown(struct rproc *rproc) { struct device *dev = &rproc->dev; - int ret; + int ret = 0; ret = mutex_lock_interruptible(&rproc->lock); if (ret) { dev_err(dev, "can't lock rproc %s: %d\n", rproc->name, ret); - return; + return ret; } /* if the remote proc is still needed, bail out */ @@ -2097,6 +2099,7 @@ void rproc_shutdown(struct rproc *rproc) rproc->table_ptr = NULL; out: mutex_unlock(&rproc->lock); + return ret; } EXPORT_SYMBOL(rproc_shutdown); diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c index abf0cd05d5e1..51a04bc6ba7a 100644 --- a/drivers/remoteproc/remoteproc_sysfs.c +++ b/drivers/remoteproc/remoteproc_sysfs.c @@ -206,7 +206,7 @@ static ssize_t state_store(struct device *dev, rproc->state != RPROC_ATTACHED) return -EINVAL; - rproc_shutdown(rproc); + ret = rproc_shutdown(rproc); } else if (sysfs_streq(buf, "detach")) { if (rproc->state != RPROC_ATTACHED) return -EINVAL; |