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Re: [linux-sunxi] Re: [PATCH v4 01/11] clk: sunxi: Add display and TCON0 clocks driver

From Priit Laes <plaes@plaes.org>
Newsgroups linux.kernel
Subject Re: [linux-sunxi] Re: [PATCH v4 01/11] clk: sunxi: Add display and TCON0 clocks driver
Date 2016-05-12 05:40 +0200
Message-ID <rxPDI-5tt-3@gated-at.bofh.it> (permalink)
References (3 earlier) <rwDbz-5aj-7@gated-at.bofh.it> <rx20i-6qo-9@gated-at.bofh.it> <rx20i-6qo-19@gated-at.bofh.it> <rxlmh-zy-9@gated-at.bofh.it> <rxKE2-E3-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, 2016-05-11 at 15:15 -0700, Stephen Boyd wrote:
> On 05/10, Priit Laes wrote:
> > 
> > On Mon, 2016-05-09 at 15:39 -0700, Stephen Boyd wrote:
> > > 
> > > On 05/09, Stephen Boyd wrote:
> > > > 
> > > > 
> > > > 
> > > > Ok I applied this one to clk-next.
> > > > 
> > > And I squashed this in to silence the following checker warning.
> > > 
> > > drivers/clk/sunxi/clk-sun4i-display.c:110:33: warning: Variable
> > > length array is used.
> > > 
> > > ---8<---
> > > diff --git a/drivers/clk/sunxi/clk-sun4i-display.c
> > > b/drivers/clk/sunxi/clk-sun4i-display.c
> > > index f02e250e64ed..f8ff6c4a5633 100644
> > > --- a/drivers/clk/sunxi/clk-sun4i-display.c
> > > +++ b/drivers/clk/sunxi/clk-sun4i-display.c
> > > @@ -107,7 +107,7 @@ static int
> > > sun4i_a10_display_reset_xlate(struct
> > > reset_controller_dev *rcdev,
> > >  static void __init sun4i_a10_display_init(struct device_node
> > > *node,
> > >  					  const struct
> > > sun4i_a10_display_clk_data *data)
> > >  {
> > > -	const char *parents[data->parents];
> > > +	const char *parents[4];
> > This change breaks at least de_[bf]e clocks which have 3 clock
> > parents.

> I just used the largest data->parents number, which was 4. How
> does that break anything?

If you look at the sun4i_a10_display_init, it contains this block:

    ret = of_clk_parent_fill(node, parents, ARRAY_SIZE(parents));
    if (ret != ARRAY_SIZE(parents)) {
        pr_err("%s: Could not retrieve the parents\n", clk_name);
        goto unmap;
    }

of_clk_parent_fill returns 3 for de_be/de_fe nodes, and
ARRAY_SIZE(parents) is 4.

Päikest,
Priit :)

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Thread

Re: [PATCH v4 01/11] clk: sunxi: Add display and TCON0 clocks driver Stephen Boyd <sboyd@codeaurora.org> - 2016-05-07 00:40 +0200
  Re: [PATCH v4 01/11] clk: sunxi: Add display and TCON0 clocks driver Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-05-08 22:10 +0200
    Re: [PATCH v4 01/11] clk: sunxi: Add display and TCON0 clocks driver Stephen Boyd <sboyd@codeaurora.org> - 2016-05-10 00:40 +0200
      Re: [PATCH v4 01/11] clk: sunxi: Add display and TCON0 clocks driver Stephen Boyd <sboyd@codeaurora.org> - 2016-05-10 00:40 +0200
        Re: [PATCH v4 01/11] clk: sunxi: Add display and TCON0 clocks driver Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-05-10 08:40 +0200
          Re: [PATCH v4 01/11] clk: sunxi: Add display and TCON0 clocks driver Stephen Boyd <sboyd@codeaurora.org> - 2016-05-12 00:20 +0200
        Re: [linux-sunxi] Re: [PATCH v4 01/11] clk: sunxi: Add display and  TCON0 clocks driver Priit Laes <plaes@plaes.org> - 2016-05-10 21:20 +0200
          Re: [linux-sunxi] Re: [PATCH v4 01/11] clk: sunxi: Add display and  TCON0 clocks driver Stephen Boyd <sboyd@codeaurora.org> - 2016-05-12 00:20 +0200
            Re: [linux-sunxi] Re: [PATCH v4 01/11] clk: sunxi: Add display and  TCON0 clocks driver Priit Laes <plaes@plaes.org> - 2016-05-12 05:40 +0200
              Re: [linux-sunxi] Re: [PATCH v4 01/11] clk: sunxi: Add display and  TCON0 clocks driver Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-05-12 09:00 +0200
                Re: [linux-sunxi] Re: [PATCH v4 01/11] clk: sunxi: Add display and  TCON0 clocks driver Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-05-12 10:40 +0200
                Re: [linux-sunxi] Re: [PATCH v4 01/11] clk: sunxi: Add display and  TCON0 clocks driver Stephen Boyd <sboyd@codeaurora.org> - 2016-05-12 23:50 +0200

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