diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_mode_config.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c index 4099a626324a..55322d7048f5 100644 --- a/drivers/gpu/drm/drm_mode_config.c +++ b/drivers/gpu/drm/drm_mode_config.c @@ -581,6 +581,29 @@ static void validate_encoder_possible_clones(struct drm_encoder *encoder) encoder->possible_clones, encoder_mask); } +static u32 full_crtc_mask(struct drm_device *dev) +{ + struct drm_crtc *crtc; + u32 crtc_mask = 0; + + drm_for_each_crtc(crtc, dev) + crtc_mask |= drm_crtc_mask(crtc); + + return crtc_mask; +} + +static void validate_encoder_possible_crtcs(struct drm_encoder *encoder) +{ + u32 crtc_mask = full_crtc_mask(encoder->dev); + + WARN((encoder->possible_crtcs & crtc_mask) == 0 || + (encoder->possible_crtcs & ~crtc_mask) != 0, + "Bogus possible_crtcs: " + "[ENCODER:%d:%s] possible_crtcs=0x%x (full crtc mask=0x%x)\n", + encoder->base.id, encoder->name, + encoder->possible_crtcs, crtc_mask); +} + void drm_mode_config_validate(struct drm_device *dev) { struct drm_encoder *encoder; @@ -588,6 +611,8 @@ void drm_mode_config_validate(struct drm_device *dev) drm_for_each_encoder(encoder, dev) fixup_encoder_possible_clones(encoder); - drm_for_each_encoder(encoder, dev) + drm_for_each_encoder(encoder, dev) { validate_encoder_possible_clones(encoder); + validate_encoder_possible_crtcs(encoder); + } } |