linux-kernel - Re: [PATCH] stm class: Fix channel free in stm output free path

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Message-ID: <87v9zsd9ii.fsf@ashishki-desk.ger.corp.intel.com>
Date:   Fri, 05 Apr 2019 13:36:05 +0300
From:   Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        linux-stm32@...md-mailman.stormreply.com,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>
Cc:     Rajendra Nayak <rnayak@...eaurora.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Tingwei Zhang <tingwei@...eaurora.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        stable@...r.kernel.org
Subject: Re: [PATCH] stm class: Fix channel free in stm output free path

Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org> writes:

> From: Tingwei Zhang <tingwei@...eaurora.org>
>
> Number of free masters is not set correctly in stm
> free path. Fix this by properly adding the number
> of output channels before setting them to 0 in
> stm_output_disclaim().
>
> Currently it is equivalent to doing nothing since
> master->nr_free is incremented by 0.

Good catch, thank you!