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

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Message-ID: <CAMuHMdW7jXSFx5kU6PKr55cXw2+Hu_J-Z4NdUk=m_2AxuaOC0g@mail.gmail.com>
Date:   Wed, 11 Oct 2023 09:43:56 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     claudiu beznea <claudiu.beznea@...on.dev>
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 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()?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds