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

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Date:   Tue, 11 Jul 2023 10:37:56 +0800
From:   Guiting Shen <aarongt.shen@...il.com>
To:     Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Thierry Reding <thierry.reding@...il.com>
Cc:     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

On Tue, Jul 11, 2023 at 03:15:50AM GMT+8, Uwe Kleine-König wrote:
> 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));
> 

Ok, I will add it in v2 patch.

I also found that the clk_enable() of atmel_pwm_apply() do not include
the error code in the error message. Do I also add this in v2 patch or
in separate patch?

-- 
Regards,
Guiting Shen