drm/radeon: restore modeset late in GPU reset path

commit d3493574e267c203836bfdcb9c58d8af46fc0da1 upstream.

Modeset path seems to conflict sometimes with the memory management
leading to kernel deadlock. This move modesetting reset after GPU
acceleration reset.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
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 e2f5f888c374cc29b2f8658a5e0ba9d91325827d..ffd5534e301cb035dcf75884603f074adc1be45f 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1337,7 +1337,6 @@ retry:
        }
 
        radeon_restore_bios_scratch_regs(rdev);
-       drm_helper_resume_force_mode(rdev->ddev);
 
        if (!r) {
                for (i = 0; i < RADEON_NUM_RINGS; ++i) {
@@ -1362,6 +1361,8 @@ retry:
                }
        }
 
+       drm_helper_resume_force_mode(rdev->ddev);
+
        ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
        if (r) {
                /* bad news, how to tell it to userspace ? */