On Mon, Mar 17, 2025 at 05:10:57PM +0530, 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. > Please rewrite this in the form expressed in https://docs.kernel.org/process/submitting-patches.html#describe-your-changes Clearly describe the problem you're solving - not just the change in behavior. What do you mean that "firmware loading fails" if we hit a suspend during stop and start through sysfs? At what point does it fail? > Fixes: a781e5aa59110 ("remoteproc: core: Prevent system suspend during remoteproc recovery") That patch clearly states that it intends to keep the system from suspending during recovery. As far as I can tell you're changing the start and stop sequences. As such, I don't think the referred to patch was broken and you're not fixing it. > Signed-off-by: Souradeep Chowdhury <quic_schowdhu@xxxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx It's not clear to me from the commit message why this should be backported to stable kernel. > --- > Changes in v3 > > *Add the stability mailing list in commit message > > 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; > } > - > + You're replacing an empty line with a tab... Other than that, the change looks sensible. Regards, Bjorn > + 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); > -- > 2.34.1 >
