target/linux/bcm27xx/patches-5.4/950-0485-drm-modes-parse_cmdline-Add-freestanding-argument-to.patch

   1 From d3c76025a7de614fade5ffcaa8c1d88d8d64213e Mon Sep 17 00:00:00 2001
   2 From: Hans de Goede <hdegoede@redhat.com>
   3 Date: Mon, 18 Nov 2019 16:51:27 +0100
   4 Subject: [PATCH] drm/modes: parse_cmdline: Add freestanding argument
   5  to drm_mode_parse_cmdline_options()
   6
   7 Commit 99e2716e053734b70434502867be24d20a3e2d84 upstream.
   8
   9 Add a freestanding function argument to drm_mode_parse_cmdline_options()
  10 similar to how drm_mode_parse_cmdline_extra() already has this.
  11
  12 This is a preparation patch for allowing parsing of stand-alone options
  13 without a mode before them, e.g.: video=HDMI-1:margin_right=14,...
  14
  15 Acked-by: Maxime Ripard <mripard@kernel.org>
  16 Signed-off-by: Hans de Goede <hdegoede@redhat.com>
  17 Link: https://patchwork.freedesktop.org/patch/msgid/20191118155134.30468-6-hdegoede@redhat.com
  18 ---
  19  drivers/gpu/drm/drm_modes.c | 5 +++++
  20  1 file changed, 5 insertions(+)
  21
  22 --- a/drivers/gpu/drm/drm_modes.c
  23 +++ b/drivers/gpu/drm/drm_modes.c
  24 @@ -1592,6 +1592,7 @@ static int drm_mode_parse_cmdline_int(co
  25  }
  26
  27  static int drm_mode_parse_cmdline_options(const char *str,
  28 +                                         bool freestanding,
  29                                           const struct drm_connector *connector,
  30                                           struct drm_cmdline_mode *mode)
  31  {
  32 @@ -1670,6 +1671,9 @@ static int drm_mode_parse_cmdline_option
  33         if (!is_power_of_2(rotation & DRM_MODE_ROTATE_MASK))
  34                 return -EINVAL;
  35
  36 +       if (rotation && freestanding)
  37 +               return -EINVAL;
  38 +
  39         mode->rotation_reflection = rotation;
  40
  41         return 0;
  42 @@ -1862,6 +1866,7 @@ bool drm_mode_parse_command_line_for_con
  43
  44         if (options_ptr) {
  45                 ret = drm_mode_parse_cmdline_options(options_ptr + 1,
  46 +                                                    false,
  47                                                      connector, mode);
  48                 if (ret)
  49                         return false;