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drm/i915/fbdev: do not create fbdev if HPD is suspended

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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@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220826141929.189681-4-andrzej.hajda@intel.com
This commit is contained in:
Andrzej Hajda 2022-08-26 16:19:29 +02:00 committed by Imre Deak
parent f8cc091e05
commit f1ee74afc1
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/display/intel_fbdev.c
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@ -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)) {