In case of deferred FB setup core can try to create new
framebuffer. Disallow it if hpd_suspended flag is set.
Signed-off-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
Reviewed-by: Imre Deak <imre.deak@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_fbdev.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 2903b9cfa0f834..f287362dbdc68a 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -210,6 +210,12 @@ static int intelfb_create(struct drm_fb_helper *helper,
struct drm_i915_gem_object *obj;
int ret;
+ mutex_lock(&ifbdev->hpd_lock);
+ ret = ifbdev->hpd_suspended ? -EAGAIN : 0;
+ mutex_unlock(&ifbdev->hpd_lock);
+ if (ret)
+ return ret;
+
if (intel_fb &&
(sizes->fb_width > intel_fb->base.width ||
sizes->fb_height > intel_fb->base.height)) {
--
2.25.1
