Merge tag 'drm-fixes-2018-06-22' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Just run of the mill fixes,

  core:
   - regression fix in device unplug

  qxl:
   - regression fix for might sleep in cursor handling

  nouveau:
   - regression fix in multi-screen cursor handling

  amdgpu:
   - switch off DC by default on Kaveri and older
   - some minor fixes

  i915:
   - some GEM regression fixes
   - doublescan mode fixes

  sun4i:
   - revert fix for a regression

  sii8620 bridge:
   - misc fixes"

* tag 'drm-fixes-2018-06-22' of git://anongit.freedesktop.org/drm/drm: (28 commits)
  drm/bridge/sii8620: fix display of packed pixel modes in MHL2
  drm/amdgpu: Make amdgpu_vram_mgr_bo_invisible_size always accurate
  drm/amdgpu: Refactor amdgpu_vram_mgr_bo_invisible_size helper
  drm/amdgpu: Update pin_size values before unpinning BO
  drm/amdgpu:All UVD instances share one idle_work handle
  drm/amdgpu: Don't default to DC support for Kaveri and older
  drm/amdgpu: Use kvmalloc_array for allocating VRAM manager nodes array
  drm/amd/pp: Fix uninitialized variable
  drm/i915: Enable provoking vertex fix on Gen9 systems.
  drm/i915: Fix context ban and hang accounting for client
  drm/i915: Turn off g4x DP port in .post_disable()
  drm/i915: Disallow interlaced modes on g4x DP outputs
  drm/i915: Fix PIPESTAT irq ack on i965/g4x
  drm/i915: Allow DBLSCAN user modes with eDP/LVDS/DSI
  drm/i915/execlists: Avoid putting the error pointer
  drm/i915: Apply batch location restrictions before pinning
  drm/nouveau/kms/nv50-: cursors always use core channel vram ctxdma
  Revert "drm/sun4i: Handle DRM_BUS_FLAG_PIXDATA_*EDGE"
  drm/atmel-hlcdc: check stride values in the first plane
  drm/bridge/sii8620: fix HDMI cable connection to dongle
  ...

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 3317d1536f4f..6e5284e6c028 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2158,10 +2158,18 @@ bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
         switch (asic_type) {
 #if defined(CONFIG_DRM_AMD_DC)
         case CHIP_BONAIRE:
-        case CHIP_HAWAII:
         case CHIP_KAVERI:
         case CHIP_KABINI:
         case CHIP_MULLINS:
+                /*
+                 * We have systems in the wild with these ASICs that require
+                 * LVDS and VGA support which is not supported with DC.
+                 *
+                 * Fallback to the non-DC driver here by default so as not to
+                 * cause regressions.
+                 */
+                return amdgpu_dc > 0;
+        case CHIP_HAWAII:
         case CHIP_CARRIZO:
         case CHIP_STONEY:
         case CHIP_POLARIS10: