linux-kernel - Re: [PATCH] pwm: atmel: enable clk when pwm already enabled in bootloader

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Message-ID: <20230710191550.7y6wukf7w44us4pd@pengutronix.de>
Date:   Mon, 10 Jul 2023 21:15:50 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     Guiting Shen <aarongt.shen@...il.com>,
        claudiu.beznea@...rochip.com, nicolas.ferre@...rochip.com,
        alexandre.belloni@...tlin.com,
        linux-arm-kernel@...ts.infradead.org, linux-pwm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pwm: atmel: enable clk when pwm already enabled in
 bootloader

Hello,

On Mon, Jul 10, 2023 at 05:00:45PM +0200, Thierry Reding wrote:
> On Mon, Jul 10, 2023 at 10:42:14PM +0800, Guiting Shen wrote:
> > +		err = clk_enable(atmel_pwm->clk);
> > +		if (err) {
> > +			dev_err(atmel_pwm->chip.dev, "enable clock error\n");
> 
> Might be worth to include the error code in the error message to make it
> easier to diagnose where the issue is. Something like:
> 
> 	dev_err(atmel_pwm->chip.dev, "failed to enable clock: %d\n", err);

Or (IMHO) still better:

 	dev_err(atmel_pwm->chip.dev, "failed to enable clock: %pe\n", ERR_PTR(err));

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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