linux/drivers/gpu
Shuicheng Lin f5ef65adf8 drm/xe/userptr: Stub notifier_lock helpers when DRM_GPUSVM=n
When CONFIG_DRM_GPUSVM=n (e.g. um-allyesconfig), the only caller of
xe_pt_svm_userptr_notifier_lock() is compiled out, triggering:

  drivers/gpu/drm/xe/xe_pt.c:1418:13: warning:
    'xe_pt_svm_userptr_notifier_lock' defined but not used
    [-Wunused-function]

The helpers cannot simply be removed in this case: the matching
xe_pt_svm_userptr_notifier_unlock() is also referenced from
xe_pt_update_ops_run(), which lives outside any DRM_GPUSVM ifdef and is
gated only at runtime by pt_update_ops->needs_svm_lock. The symbol must
exist in all builds.

Provide empty static inline stubs for !DRM_GPUSVM, matching the pattern
used by xe_svm_notifier_lock()/_unlock() in xe_svm.h.

Fixes: dca6e08c92 ("drm/xe/userptr: Hold notifier_lock for write on inject test path")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202606302210.QqcLbOEN-lkp@intel.com/
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260630192221.2998168-1-shuicheng.lin@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
(cherry picked from commit 3359422bf0)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
2026-07-09 12:09:42 +02:00
..
drm drm/xe/userptr: Stub notifier_lock helpers when DRM_GPUSVM=n 2026-07-09 12:09:42 +02:00
host1x gpu: host1x: Fix iommu_map_sgtable() return value check 2026-05-28 17:19:30 +02:00
ipu-v3
nova-core drm-next for 7.2-rc1 2026-06-17 10:21:00 +01:00
tests
trace
vga fbdev: Wrap fbcon updates from vga-switcheroo in helper 2026-06-09 16:00:11 +02:00
buddy.c drm/buddy: Integrate lockdep annotations for gpu buddy manager 2026-05-08 19:16:19 +05:30
Kconfig
Makefile