linux-kernel - Re: [PATCH 2/9] ASoC: cs35l41: Handle mdsync

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Message-ID: <20230905092321.GE103419@ediswmail.ad.cirrus.com>
Date:   Tue, 5 Sep 2023 09:23:21 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
CC:     James Schulman <james.schulman@...rus.com>,
        David Rhodes <david.rhodes@...rus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        "Liam Girdwood" <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        "Stefan Binding" <sbinding@...nsource.cirrus.com>,
        <alsa-devel@...a-project.org>, <patches@...nsource.cirrus.com>,
        <linux-kernel@...r.kernel.org>, <kernel@...labora.com>
Subject: Re: [PATCH 2/9] ASoC: cs35l41: Handle mdsync_up reg write errors

On Sun, Sep 03, 2023 at 12:06:14AM +0300, Cristian Ciocaltea wrote:
> The return code of regmap_multi_reg_write() call related to "MDSYNC up"
> sequence is shadowed by the subsequent regmap_read_poll_timeout()
> invocation, which will hit a timeout in case the write operation above
> fails.
> 
> Make sure cs35l41_global_enable() returns the correct error code instead
> of -ETIMEDOUT.
> 
> Additionally, to be able to distinguish between the timeouts of
> wait_for_completion_timeout() and regmap_read_poll_timeout(), print an
> error message for the former and return immediately.  This also avoids
> having to wait unnecessarily for the second time.
> 
> Fixes: f8264c759208 ("ALSA: cs35l41: Poll for Power Up/Down rather than waiting a fixed delay")
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> ---

Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>

Thanks,
Charles