linux-kernel - Re: [PATCH] remoteproc: sysmon: Wait for SSCTL service to come up

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Message-ID: <YnlI/9i1C720mgAX@google.com>
Date:   Mon, 9 May 2022 10:01:51 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Sibi Sankar <quic_sibis@...cinc.com>
Cc:     bjorn.andersson@...aro.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, sboyd@...nel.org, agross@...nel.org,
        linux-remoteproc@...r.kernel.org, mathieu.poirier@...aro.org
Subject: Re: [PATCH] remoteproc: sysmon: Wait for SSCTL service to come up

On Mon, May 09, 2022 at 08:41:07AM +0530, Sibi Sankar wrote:
> The SSCTL service comes up after a finite time when the remote Q6 comes
> out of reset. Any graceful shutdowns requested during this period will
> be a NOP and abrupt tearing down of the glink channel might lead to pending
> transactions on the remote Q6 side and will ultimately lead to a fatal
> error. Fix this by waiting for the SSCTL service when a graceful shutdown
> is requested.
> 
> Fixes: 1fb82ee806d1 ("remoteproc: qcom: Introduce sysmon")
> Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>

Reviewed-by: Matthias Kaehlcke <mka@...omium.org>