linux-kernel - Re: [PATCH 3/9] blackfin: bf609: allow NULL clock for clk_get

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Message-ID: <CAK7LNASr2bPuqqPaz2vPWLXUyVoa7oPtRVfyUDEx1B6YU2Gvxw@mail.gmail.com>
Date:   Wed, 19 Jul 2017 03:54:00 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Jonas Gorski <jonas.gorski@...il.com>
Cc:     Steven Miao <realmz6@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        adi-buildroot-devel@...ts.sourceforge.net,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/9] blackfin: bf609: allow NULL clock for clk_get_rate

2017-07-18 19:17 GMT+09:00 Jonas Gorski <jonas.gorski@...il.com>:
> Make the behaviour of clk_get_rate consistent with common clk's
> clk_get_rate by accepting NULL clocks as parameter. Some device
> drivers rely on this, and will cause an OOPS otherwise.
>
> Fixes: 969003152aa9 ("blackfin: bf60x: add clock support")
> Cc: Steven Miao <realmz6@...il.com>
> Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>

This Cc can be replaced with

Reviewed-by: Masahiro Yamada <yamada.masahiro@...ionext.com>

Thank you.


> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: adi-buildroot-devel@...ts.sourceforge.net
> Cc: linux-kernel@...r.kernel.org
> Reported-by: Mathias Kresin <dev@...sin.me>
> Signed-off-by: Jonas Gorski <jonas.gorski@...il.com>
> ---
>  arch/blackfin/mach-bf609/clock.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/blackfin/mach-bf609/clock.c b/arch/blackfin/mach-bf609/clock.c
> index 392a59b9a504..21a0ec18829f 100644
> --- a/arch/blackfin/mach-bf609/clock.c
> +++ b/arch/blackfin/mach-bf609/clock.c
> @@ -109,7 +109,7 @@ EXPORT_SYMBOL(clk_disable);
>  unsigned long clk_get_rate(struct clk *clk)
>  {
>         unsigned long ret = 0;
> -       if (clk->ops && clk->ops->get_rate)
> +       if (clk && clk->ops && clk->ops->get_rate)
>                 ret = clk->ops->get_rate(clk);
>         return ret;
>  }
> --
> 2.11.0
>



-- 
Best Regards
Masahiro Yamada