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Commit 358c258a authored by Christian König's avatar Christian König Committed by Alex Deucher
Browse files

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: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 00dfedc1

drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

+3 −5
Original line number Diff line number Diff line
@@ -258,12 +258,10 @@ int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data, 
	    AMDGPU_GEM_USERPTR_REGISTER))

		return -EINVAL;



	if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) && (

	     !(args->flags & AMDGPU_GEM_USERPTR_ANONONLY) ||

	     !(args->flags & AMDGPU_GEM_USERPTR_REGISTER))) {

	if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&

	     !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {



		/* if we want to write to it we must require anonymous

		   memory and install a MMU notifier */

		/* if we want to write to it we must install a MMU notifier */

		return -EACCES;

	}