On 3/13/2025 3:33 PM, Greg KH wrote:
On Thu, Mar 13, 2025 at 02:42:10PM +0530, Souradeep Chowdhury wrote:
Gentle Reminder.
On 3/3/2025 2:38 PM, Souradeep Chowdhury wrote:
Add device awake calls in case of rproc boot and rproc shutdown path.
Currently, device awake call is only present in the recovery path
of remoteproc. If a user stops and starts rproc by using the sysfs
interface, then on pm suspension the firmware loading fails. Keep the
device awake in such a case just like it is done for the recovery path.
Signed-off-by: Souradeep Chowdhury <quic_schowdhu@xxxxxxxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index c2cf0d277729..908a7b8f6c7e 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1916,7 +1916,8 @@ int rproc_boot(struct rproc *rproc)
pr_err("invalid rproc handle\n");
return -EINVAL;
}
-
+
+ pm_stay_awake(rproc->dev.parent);
dev = &rproc->dev;
ret = mutex_lock_interruptible(&rproc->lock);
@@ -1961,6 +1962,7 @@ int rproc_boot(struct rproc *rproc)
atomic_dec(&rproc->power);
unlock_mutex:
mutex_unlock(&rproc->lock);
+ pm_relax(rproc->dev.parent);
return ret;
}
EXPORT_SYMBOL(rproc_boot);
@@ -1991,6 +1993,7 @@ int rproc_shutdown(struct rproc *rproc)
struct device *dev = &rproc->dev;
int ret = 0;
+ pm_stay_awake(rproc->dev.parent);
ret = mutex_lock_interruptible(&rproc->lock);
if (ret) {
dev_err(dev, "can't lock rproc %s: %d\n", rproc->name, ret);
@@ -2027,6 +2030,7 @@ int rproc_shutdown(struct rproc *rproc)
rproc->table_ptr = NULL;
out:
mutex_unlock(&rproc->lock);
+ pm_relax(rproc->dev.parent);
return ret;
}
EXPORT_SYMBOL(rproc_shutdown);
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.
</formletter>
Thanks for the instructions, corrected in the next version.
