Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

drm/v3d: Fix prime imports of buffers from other drivers.

Browse source 
[ Upstream commit 62d1a752874962f072de8a779e960fcd2ab4847b ]

v3d_bo_get_pages() checks this to decide to map the imported buffer
instead of the backing shmem file.  The caller was about to set this
value anyway, and there's no error path in between.  Ideally we
wouldn't even allocate the shmem file for our imports, but that's a
more invasive fix.

Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 57692c94dc ("drm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+")
Link: https://patchwork.freedesktop.org/patch/msgid/20181128230927.10951-3-eric@anholt.net
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Dave Emett <david.emett@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eric Anholt 2018-11-28 15:09:27 -08:00 • committed by Greg Kroah-Hartman
parent 14743f8591
commit 5214c28b68
1 changed files with 1 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/gpu/drm/v3d/v3d_bo.c
View file

@ -293,6 +293,7 @@ v3d_prime_import_sg_table(struct drm_device *dev,
bo->resv = attach->dmabuf->resv;
bo->sgt = sgt;
obj->import_attach = attach;
v3d_bo_get_pages(bo);
v3d_mmu_insert_ptes(bo);