linux-kernel - Re: [PATCH] thermal: imx8mm: suppress log message on probe deferral

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Message-ID: <db4304f6-0d8b-5eef-38d9-f3965cdc3cba@denx.de>
Date:   Sat, 8 Jul 2023 14:52:58 +0200
From:   Marek Vasut <marex@...x.de>
To:     Ahmad Fatoum <a.fatoum@...gutronix.de>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Peng Fan <peng.fan@....com>
Cc:     linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] thermal: imx8mm: suppress log message on probe deferral

On 7/8/23 13:26, Ahmad Fatoum wrote:
> nvmem_cell_read_u32() may return -EPROBE_DEFER if NVMEM supplier has not
> yet been probed. Future reprobe may succeed, so printing:
> 
>    i.mx8mm_thermal 30260000.tmu: Failed to read OCOTP nvmem cell (-517).
> 
> to the log is confusing. Fix this by using dev_err_probe. This also
> elevates the message from warning to error, which is more correct: The
> log message is only ever printed in probe error path and probe aborts
> afterwards, so it really warrants an error-level message.
> 
> Fixes: 403291648823 ("thermal/drivers/imx: Add support for loading calibration data from OCOTP")
> Signed-off-by: Ahmad Fatoum <a.fatoum@...gutronix.de>

Reviewed-by: Marek Vasut <marex@...x.de>

Thanks