On 17/05/2024 00:58, Chris Lew wrote:
From: Richard Maina <quic_rmaina@xxxxxxxxxxx>
When remoteproc goes down unexpectedly this results in a state where any
acquired hwspinlocks will remain locked possibly resulting in deadlock.
In order to ensure all locks are freed we include a call to
hwspin_lock_bust() during remoteproc shutdown.
For qcom_q6v5_pas remoteprocs, each remoteproc has an assigned id that
is used to take the hwspinlock. Remoteproc should use this id to try and
bust the lock on remoteproc stop.
This edge case only occurs with q6v5_pas watchdog crashes. The error
fatal case has handling to clear the hwspinlock before the error fatal
interrupt is triggered.
Signed-off-by: Richard Maina <quic_rmaina@xxxxxxxxxxx>
Signed-off-by: Chris Lew <quic_clew@xxxxxxxxxxx>
---
+ if (adsp->hwlock) {
+ ret = hwspin_lock_bust(adsp->hwlock, adsp->hwlock_id);
+ if (ret)
+ dev_info(adsp->dev, "failed to bust hwspinlock\n");
qcom_hwspinlock_bust() already prints an error on failure, you're
printing a second error here.
Choose at most one.
---
bod
