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drm/amdgpu: allow write access to mapped userptrs 

With the updated MMU notifier we should also be able to
handle the writeback case correctly.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2016-03-11 15:29:27 +01:00 committed by Alex Deucher
parent 00dfedc1e4
commit 358c258a81
1 changed files with 3 additions and 5 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
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@ -258,12 +258,10 @@ int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
AMDGPU_GEM_USERPTR_REGISTER)) AMDGPU_GEM_USERPTR_REGISTER))
return -EINVAL; return -EINVAL;
if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) && ( if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
!(args->flags & AMDGPU_GEM_USERPTR_ANONONLY) || !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
!(args->flags & AMDGPU_GEM_USERPTR_REGISTER))) {
/* if we want to write to it we must require anonymous /* if we want to write to it we must install a MMU notifier */
memory and install a MMU notifier */
return -EACCES; return -EACCES;
} }