MIPS: drm/radeon: A gray screen appears when going into hibernation(S4)
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Message ID 20210304012535.25475-1-wangjingyu@uniontech.com
State New, archived
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Series
  • MIPS: drm/radeon: A gray screen appears when going into hibernation(S4)
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Commit Message

wangjingyu March 4, 2021, 1:25 a.m. UTC
Radeon Card:
  Caicos[Radeon HD 6450/7450/8450 /R5 230 OEM]

there is no gray screen when echo 4>/sys/module/drm/parameters/debug,
so the WREG32 function after DRM_DEBUG_KMS may have wrong when going
into hibernation.the delay of msleep(50) just can fix gray screen.

Signed-off-by: wangjingyu <wangjingyu@uniontech.com>
Signed-off-by: zhuyong <zhuyong@uniontech.com>
---
 drivers/gpu/drm/radeon/radeon_display.c | 2 ++
 1 file changed, 2 insertions(+)

Patch
diff mbox series

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 652af7a134bd..1be50f949bb4 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -226,6 +226,8 @@  void radeon_crtc_load_lut(struct drm_crtc *crtc)
 	if (!crtc->enabled)
 		return;
 
+	sleep(50);
+
 	if (ASIC_IS_DCE5(rdev))
 		dce5_crtc_load_lut(crtc);
 	else if (ASIC_IS_DCE4(rdev))