[v4 0/6] Fix several bugs in error handling during device probe

[Jiang Liu]

This patchset tries to fix several memory leakages/invalid memory
accesses on error handling path during GPU driver loading/unloading.
They applies to:
https://gitlab.freedesktop.org/agd5f/linux.git amd-staging-drm-next

v4:
1) drop patch 1 in v3
2) split out amdxcp related change into a dedicated patch
3) use `guard(mutex)` instead of mutex_lock/unlock().
4) move patch 6 in v3 to next patch set

v3:
1) drop first patch of v2
2) rework the 0003/0004 patches of v2 according to review comments
3) add patch 0004 to fix possible resource leakage in amdgpu_pci_probe()

v2:
1) rebased to https://gitlab.freedesktop.org/agd5f/linux.git branch
   amd-staging-drm-next.
2) removed the first patch, which is unnecessary.
3) add amdgpu_xcp_drm_dev_free() in patch 0003 to enhance amdxcp
   driver to better support device remove and error handling.
4) reworked patch 0005 to fix it in amdgpu instead of drm core.

Jiang Liu (5):
  drm/amdgpu: clear adev->in_suspend flag when fails to suspend
  drm/amdxcp: introduce new API amdgpu_xcp_drm_dev_free()
  drm/amdgpu: fix use after free bug related to
    amdgpu_driver_release_kms()
  drm/amdgpu: enhance error handling in function amdgpu_pci_probe()
  drm/amdgpu: fix invalid memory access in amdgpu_fence_driver_sw_fini()

 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c  | 18 ++++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c     | 14 +++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c   |  4 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c     | 70 +++++++++++++++++----
 drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h     |  4 +-
 drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c | 65 ++++++++++++++++---
 drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.h |  1 +
 7 files changed, 142 insertions(+), 34 deletions(-)

-- 
2.43.5