linux-kernel - [PATCH 0/1] remoteproc: avoid notification when suspended

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Message-Id: <20210519234418.1196387-1-elder@linaro.org>
Date:   Wed, 19 May 2021 18:44:17 -0500
From:   Alex Elder <elder@...aro.org>
To:     ohad@...ery.com, bjorn.andersson@...aro.org,
        mathieu.poirier@...aro.org
Cc:     linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/1] remoteproc: avoid notification when suspended

I added a cover page for this single patch to provide a little more
explanation about testing.

I have verified that, when this patch is applied, the IPA driver
receives the desired crash notification after the modem has crashed.
It recovers properly, and functions correctly following the crash.

However I have not tested the specific scenario it is intended to
fix; that is, I have not verified that the crash notification is
delayed if the crash occurs while the IPA driver is suspended.  If I
had a reliable way to do this I would have done so, but I do not.
I can only argue that it *should* work, based on the way the
freezable system workqueue is designed.

My biggest concern about this change is that I don't understand
other remoteproc users well enough to know what impact this change
would have on them.  So I am relying on review (and testing if
possible!) to evaluate that.

And finally, while this is a very simple (one line) change, if there
are other suggestions I'd like to hear them.

					-Alex

Alex Elder (1):
  remoteproc: use freezable workqueue for crash notifications

 drivers/remoteproc/remoteproc_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.27.0