target/linux/bcm27xx/patches-4.19/950-0755-clk-bcm2835-Avoid-null-pointer-exception.patch

   1 From 5b8a217fe818bc038592b8a5284ba0c18948fabf Mon Sep 17 00:00:00 2001
   2 From: popcornmix <popcornmix@gmail.com>
   3 Date: Tue, 6 Aug 2019 15:23:14 +0100
   4 Subject: [PATCH] clk-bcm2835: Avoid null pointer exception
   5
   6 clk_desc_array[BCM2835_PLLB] doesn't exist so we dereference null when iterating
   7
   8 Signed-off-by: popcornmix <popcornmix@gmail.com>
   9 ---
  10  drivers/clk/bcm/clk-bcm2835.c | 8 +++++---
  11  1 file changed, 5 insertions(+), 3 deletions(-)
  12
  13 --- a/drivers/clk/bcm/clk-bcm2835.c
  14 +++ b/drivers/clk/bcm/clk-bcm2835.c
  15 @@ -2288,9 +2288,11 @@ static bool bcm2835_clk_is_claimed(const
  16         int i;
  17
  18         for (i = 0; i < ARRAY_SIZE(clk_desc_array); i++) {
  19 -               const char *clk_name = *(const char **)(clk_desc_array[i].data);
  20 -               if (!strcmp(name, clk_name))
  21 -                   return bcm2835_clk_claimed[i];
  22 +               if (clk_desc_array[i].data) {
  23 +                       const char *clk_name = *(const char **)(clk_desc_array[i].data);
  24 +                       if (!strcmp(name, clk_name))
  25 +                               return bcm2835_clk_claimed[i];
  26 +               }
  27         }
  28
  29         return false;