linux-kernel - Re: [PATCH] wcn36xx: Close SMD channel on device removal

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Message-ID: <87h90u3672.fsf@kamboji.qca.qualcomm.com>
Date:   Tue, 09 May 2017 09:17:05 +0300
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Eugene Krasnikov <k.eugene.e@...il.com>,
        Eyal Ilsar <c_eilsar@....qualcomm.com>,
        wcn36xx@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] wcn36xx: Close SMD channel on device removal

Bjorn Andersson <bjorn.andersson@...aro.org> writes:

> The SMD channel is not the primary WCNSS channel and must explicitly be
> closed as the device is removed, or the channel will already by open on
> a subsequent probe call in e.g. the case of reloading the kernel module.
>
> This issue was introduced because I simplified the underlying SMD
> implementation while the SMD adaptions of the driver sat on the mailing
> list, but missed to update these patches. The patch does however only
> apply back to the transition to rpmsg, hence the limited Fixes.
>
> Fixes: 5052de8deff5 ("soc: qcom: smd: Transition client drivers from smd to rpmsg")
> Reported-by: Eyal Ilsar <c_eilsar@....qualcomm.com>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>

As this is a regression I'll queue this to 4.12.

But if this is an older bug (didn't quite understand your description
though) should there be a separate patch for stable releases?

-- 
Kalle Valo