From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 15 Sep 2017 15:55:27 +0000 (-0400)
Subject: drm/radeon: disable hard reset in hibernate for APUs
X-Git-Tag: archive/raspbian/4.9.51-1+rpi1~6^2~52
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=b601410a921b85a95aa57b8c736e04f6be771a54;p=linux-4.9.git

drm/radeon: disable hard reset in hibernate for APUs

commit 820608548737e315c6f93e3099b4e65bde062334 upstream.

Fixes a hibernation regression on APUs.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=191571
Fixes: 274ad65c9d02bdc (drm/radeon: hard reset r600 and newer GPU when hibernating.)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 3b21ca5a6c81..82b01123c386 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1674,7 +1674,7 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
 	radeon_agp_suspend(rdev);
 
 	pci_save_state(dev->pdev);
-	if (freeze && rdev->family >= CHIP_CEDAR) {
+	if (freeze && rdev->family >= CHIP_CEDAR && !(rdev->flags & RADEON_IS_IGP)) {
 		rdev->asic->asic_reset(rdev, true);
 		pci_restore_state(dev->pdev);
 	} else if (suspend) {