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| author | Daniel Stone <daniels@collabora.com> | 2015-03-19 05:33:02 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-03-23 16:22:30 +0100 |
| commit | 54270952e9a83aebf31d16ded28e6757fdf8c88b (patch) | |
| tree | 8fb4faede55572a36a012b7645efb7294b0f9af0 /drivers/gpu/drm/drm_modes.c | |
| parent | drm: fb_helper: Simplify exit condition (diff) | |
| download | linux-54270952e9a83aebf31d16ded28e6757fdf8c88b.tar.xz linux-54270952e9a83aebf31d16ded28e6757fdf8c88b.zip | |
drm: mode: Allow NULL modes for equality check
Since we're now using mode == NULL to represent disabled, it's not
wholly surprising that we'd want to compare NULL modes.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
| -rw-r--r-- | drivers/gpu/drm/drm_modes.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 53885968bdaf..213b11ea69b5 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -903,6 +903,12 @@ EXPORT_SYMBOL(drm_mode_duplicate); */ bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) { + if (!mode1 && !mode2) + return true; + + if (!mode1 || !mode2) + return false; + /* do clock check convert to PICOS so fb modes get matched * the same */ if (mode1->clock && mode2->clock) { |