linux-kernel - [PATCH 4.9 15/64] drm/radeon: disable hard reset in hibernate for APUs

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Message-Id: <20171003114229.661545716@linuxfoundation.org>
Date:   Tue,  3 Oct 2017 14:23:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 4.9 15/64] drm/radeon: disable hard reset in hibernate for APUs

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deucher@....com>

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@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/radeon/radeon_device.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 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
 	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) {