Re: [PATCH] rtc: ma35d1: fix permanent clock reference/enable-count leak in probe

[Jacky Huang <ychuang570808@gmail.com>]

> diff --git a/drivers/rtc/rtc-ma35d1.c b/drivers/rtc/rtc-ma35d1.c
> index cfcfc28060f6..43358d68565a 100644
> --- a/drivers/rtc/rtc-ma35d1.c
> +++ b/drivers/rtc/rtc-ma35d1.c
> @@ -221,14 +221,10 @@ static int ma35d1_rtc_probe(struct platform_device *pdev)
>          if (IS_ERR(rtc->rtc_reg))
>                  return PTR_ERR(rtc->rtc_reg);
>
> -       clk = of_clk_get(pdev->dev.of_node, 0);
> +       clk = devm_clk_get_enabled(&pdev->dev, NULL);
>          if (IS_ERR(clk))
>                  return dev_err_probe(&pdev->dev, PTR_ERR(clk), "failed to find rtc clock\n");
>
> -       ret = clk_prepare_enable(clk);
> -       if (ret)
> -               return ret;
> -
>          if (!(rtc_reg_read(rtc, MA35_REG_RTC_INIT) & RTC_INIT_ACTIVE)) {
>                  ret = ma35d1_rtc_init(rtc, RTC_INIT_TIMEOUT);
>                  if (ret)
> --
> 2.25.1
>

Hi Cong,

Thanks for fixing this.

The conversion to devm_clk_get_enabled() correctly fixes the
clock reference and enable-count leak while preserving the RTC
clock behavior during the device lifetime.

Reviewed-by: Jacky Huang <ychuang3@nuvoton.com>

Best regards,
Jacky Huang