linux-kernel - Re: [PATCH 1/6] clk: renesas: rzg2l: Use %x format specifier to print CLK_ON

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Date:   Wed, 11 Oct 2023 18:55:27 +0300
From:   claudiu beznea <claudiu.beznea@...on.dev>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Sergei Shtylyov <sergei.shtylyov@...il.com>, magnus.damm@...il.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, mturquette@...libre.com, sboyd@...nel.org,
        linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: Re: [PATCH 1/6] clk: renesas: rzg2l: Use %x format specifier to print
 CLK_ON_R()

Hi, Geert,

On 11.10.2023 10:43, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Wed, Oct 11, 2023 at 9:37 AM claudiu beznea <claudiu.beznea@...on.dev> wrote:
>> On 10.10.2023 17:52, Sergei Shtylyov wrote:
>>> On 10/10/23 4:26 PM, Claudiu wrote:
>>>> From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
>>>>
>>>> Use %x format specifier to print CLK_ON_R(). This is easier when
>>>> debugging as the value printed will be hexadecimal like in the hardware
>>>> manual. Along with it "0x" has been added in front of the printed value.
>>>>
>>>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
>>>> ---
>>>>  drivers/clk/renesas/rzg2l-cpg.c | 2 +-
>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
>>>> index d62f1bc1f60e..764bd72cf059 100644
>>>> --- a/drivers/clk/renesas/rzg2l-cpg.c
>>>> +++ b/drivers/clk/renesas/rzg2l-cpg.c
>>>> @@ -1213,7 +1213,7 @@ static int rzg2l_mod_clock_endisable(struct clk_hw *hw, bool enable)
>>>>              return 0;
>>>>      }
>>>>
>>>> -    dev_dbg(dev, "CLK_ON %u/%pC %s\n", CLK_ON_R(reg), hw->clk,
>>>> +    dev_dbg(dev, "CLK_ON 0x%x/%pC %s\n", CLK_ON_R(reg), hw->clk,
>>>
>>>    Perhaps "%#x" instead of "0x%x"?
>>
>> Yes, better, thanks!
> 
> "%#" is not very common in drivers/clk/.
> 
> And to me it always raises the question: What does "alternate form" mean
> for this conversion specifier and this implementation of vsnprintf()?

OK, I have no strong opinion on this. Please let me know in case you need
me to send a new version.

Thank you,
Claudiu Beznea

> 
> Gr{oetje,eeting}s,
> 
>                         Geert
>