target/linux/lantiq/patches-4.1/0050-MIPS-lantiq-add-clk_round_rate.patch

   1 From b3c10c6c19a9a0ad2b967b6afc8d8302ff4e10f9 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sun, 25 Oct 2015 21:47:23 +0100
   4 Subject: [PATCH] MIPS: lantiq: add clk_round_rate()
   5
   6 This adds a basic implementation of clk_round_rate()
   7 The clk_round_rate() function is called by multiple drivers and
   8 subsystems now and the lantiq clk driver is supposed to export this,
   9 but doesn't do so, this causes linking problems like this one:
  10 ERROR: "clk_round_rate" [drivers/media/v4l2-core/videodev.ko] undefined!
  11
  12 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  13 Cc: <stable@vger.kernel.org> # 4.1+
  14 ---
  15  arch/mips/lantiq/clk.c | 17 +++++++++++++++++
  16  1 file changed, 17 insertions(+)
  17
  18 --- a/arch/mips/lantiq/clk.c
  19 +++ b/arch/mips/lantiq/clk.c
  20 @@ -116,6 +116,23 @@ long clk_round_rate(struct clk *clk, uns
  21  }
  22  EXPORT_SYMBOL(clk_round_rate);
  23
  24 +long clk_round_rate(struct clk *clk, unsigned long rate)
  25 +{
  26 +       if (unlikely(!clk_good(clk)))
  27 +               return 0;
  28 +       if (clk->rates && *clk->rates) {
  29 +               unsigned long *r = clk->rates;
  30 +
  31 +               while (*r && (*r != rate))
  32 +                       r++;
  33 +               if (!*r) {
  34 +                       return clk->rate;
  35 +               }
  36 +       }
  37 +       return rate;
  38 +}
  39 +EXPORT_SYMBOL(clk_round_rate);
  40 +
  41  int clk_enable(struct clk *clk)
  42  {
  43         if (unlikely(!clk_good(clk)))