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authorChristoph Hellwig <hch@lst.de>2020-06-11 17:34:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-11 18:17:48 -0700
commit8449d150e66c43fd9bfd77691a56327dfdccedd7 (patch)
tree7e254d6d4de06ebb0e160125e9b476d9b8c5d2ed /drivers/gpu/drm/amd
parentb5265c813ce4efbfa2e46fd27cdf9a7f44a35d2e (diff)
downloadlinux-8449d150e66c43fd9bfd77691a56327dfdccedd7.tar.bz2
amdgpu: a NULL ->mm does not mean a thread is a kthread
Use the proper API instead. Fixes: 70539bd795002 ("drm/amd: Update MEC HQD loading code for KFD") Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Jens Axboe <axboe@kernel.dk> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Cc: Zhi Wang <zhi.a.wang@intel.com> Cc: Felipe Balbi <balbi@kernel.org> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: http://lkml.kernel.org/r/20200404094101.672954-1-hch@lst.de Link: http://lkml.kernel.org/r/20200404094101.672954-2-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/gpu/drm/amd')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index 142746836838..ffe149aafc39 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -196,7 +196,7 @@ uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct kgd_dev *dst, struct kgd_dev *s
pagefault_disable(); \
if ((mmptr) == current->mm) { \
valid = !get_user((dst), (wptr)); \
- } else if (current->mm == NULL) { \
+ } else if (current->flags & PF_KTHREAD) { \
kthread_use_mm(mmptr); \
valid = !get_user((dst), (wptr)); \
kthread_unuse_mm(mmptr); \