Merge tag 'drm-fixes-2026-01-09' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Dave Airlie:
 "I missed the drm-rust fixes tree for last week, so this catches up on
  that, along with amdgpu, and then some misc fixes across a few
  drivers. I hadn't got an xe pull by the time I sent this, I suspect
  one will arrive 10 mins after, but I don't think there is anything
  that can't wait for next week.

  Things seem to have picked up a little with people coming back from
  holidays,

  MAINTAINERS:
   - Fix Nova GPU driver git links
   - Fix typo in TYR driver entry preventing correct behavior of
     scripts/get_maintainer.pl
   - Exclude TYR driver from DRM MISC

  nova-core:
   - Correctly select RUST_FW_LOADER_ABSTRACTIONS to prevent build
     errors
   - Regenerate nova-core bindgen bindings with '--explicit-padding' to
     avoid uninitialized bytes
   - Fix length of received GSP messages, due to miscalculated message
     payload size
   - Regenerate bindings to derive MaybeZeroable
   - Use a bindings alias to derive the firmware version

  exynos:
   - hdmi: replace system_wq with system_percpu_wq

  pl111:
   - Fix error handling in probe

  mediatek/atomic/tidss:
   - Fix tidss in another way and revert reordering of pre-enable and
     post-disable operations, as it breaks other bridge drivers

  nouveau:
   - Fix regression from fwsec s/r fix

  pci/vga:
   - Fix multiple gpu's being reported a 'boot_display'

  fb-helper:
   - Fix vblank timeout during suspend/reset

  amdgpu:
   - Clang fixes
   - Navi1x PCIe DPM fixes
   - Ring reset fixes
   - ISP suspend fix
   - Analog DC fixes
   - VPE fixes
   - Mode1 reset fix

  radeon:
   - Variable sized array fix"

* tag 'drm-fixes-2026-01-09' of https://gitlab.freedesktop.org/drm/kernel: (32 commits)
  Reapply "Revert "drm/amd: Skip power ungate during suspend for VPE""
  drm/amd/display: Check NULL before calling dac_load_detection
  drm/amd/pm: Disable MMIO access during SMU Mode 1 reset
  drm/exynos: hdmi: replace use of system_wq with system_percpu_wq
  drm/fb-helper: Fix vblank timeout during suspend/reset
  PCI/VGA: Don't assume the only VGA device on a system is `boot_vga`
  drm/amdgpu: Fix query for VPE block_type and ip_count
  drm/amd/display: Add missing encoder setup to DACnEncoderControl
  drm/amd/display: Correct color depth for SelectCRTC_Source
  drm/amd/amdgpu: Fix SMU warning during isp suspend-resume
  drm/amdgpu: always backup and reemit fences
  drm/amdgpu: don't reemit ring contents more than once
  drm/amd/pm: force send pcie parmater on navi1x
  drm/amd/pm: fix wrong pcie parameter on navi1x
  drm/radeon: Remove __counted_by from ClockInfoArray.clockInfo[]
  drm/amd/display: Reduce number of arguments of dcn30's CalculateWatermarksAndDRAMSpeedChangeSupport()
  drm/amd/display: Reduce number of arguments of dcn30's CalculatePrefetchSchedule()
  drm/amd/display: Apply e4479aecf658 to dml
  nouveau: don't attempt fwsec on sb on newer platforms
  drm/tidss: Fix enable/disable order
  ...

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c
index 6d31f4967f1a..e1940b8e5bc3 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c
@@ -932,7 +932,7 @@ static bool link_detect_dac_load_detect(struct dc_link *link)
 	struct link_encoder *link_enc = link->link_enc;
 	enum engine_id engine_id = link_enc->preferred_engine;
 	enum dal_device_type device_type = DEVICE_TYPE_CRT;
-	enum bp_result bp_result;
+	enum bp_result bp_result = BP_RESULT_UNSUPPORTED;
 	uint32_t enum_id;
 
 	switch (engine_id) {
@@ -946,7 +946,9 @@ static bool link_detect_dac_load_detect(struct dc_link *link)
 		break;
 	}
 
-	bp_result = bios->funcs->dac_load_detection(bios, engine_id, device_type, enum_id);
+	if (bios->funcs->dac_load_detection)
+		bp_result = bios->funcs->dac_load_detection(bios, engine_id, device_type, enum_id);
+
 	return bp_result == BP_RESULT_OK;
 }