target/linux/bcm27xx/patches-4.19/950-0704-bcm2708_fb-Fix-layout-of-struct-vc4_display_settings.patch

   1 From c6be127c2f4d5f75c60d3778594093ff51593a6e Mon Sep 17 00:00:00 2001
   2 From: Michael Brown <mbrown@fensystems.co.uk>
   3 Date: Sun, 22 Sep 2019 21:51:29 +0100
   4 Subject: [PATCH] bcm2708_fb: Fix layout of struct
   5  vc4_display_settings_t
   6
   7 The display parameters returned by the VC4 firmware in response to the
   8 RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_SETTINGS tag do not match the
   9 layout of struct vc4_display_settings_t: the colour depth and row
  10 pitch are erroneously swapped in the kernel definition.  This can
  11 trigger a kernel warning from pixel_to_pat(), such as:
  12
  13   pixel_to_pat(): unsupported pixelformat 7296
  14
  15 Fix by adjusting the layout of struct vc4_display_settings_t to match
  16 the layout as used by the VC4 firmware.
  17
  18 Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>
  19 ---
  20  drivers/video/fbdev/bcm2708_fb.c | 2 +-
  21  1 file changed, 1 insertion(+), 1 deletion(-)
  22
  23 --- a/drivers/video/fbdev/bcm2708_fb.c
  24 +++ b/drivers/video/fbdev/bcm2708_fb.c
  25 @@ -89,8 +89,8 @@ struct vc4_display_settings_t {
  26         u32 display_num;
  27         u32 width;
  28         u32 height;
  29 -       u32 pitch;
  30         u32 depth;
  31 +       u32 pitch;
  32         u32 virtual_width;
  33         u32 virtual_height;
  34         u32 virtual_width_offset;