The exynos g2d interface is very unusual, but it looks like the
userptr objects are persistent. Hence they need FOLL_LONGTERM.
Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
Cc: Jason Gunthorpe <j...@ziepe.ca>
Cc: Inki Dae <inki....@samsung.com>
Cc: Joonyoung Shim <jy0922.s...@samsung.com>
Cc: Seung-Woo Kim <sw0312....@samsung.com>
Cc: Kyungmin Park <kyungmin.p...@samsung.com>
Cc: Kukjin Kim <kg...@kernel.org>
Cc: Krzysztof Kozlowski <k...@kernel.org>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: John Hubbard <jhubb...@nvidia.com>
Cc: Jérôme Glisse <jgli...@redhat.com>
Cc: Jan Kara <j...@suse.cz>
Cc: Dan Williams <dan.j.willi...@intel.com>
Cc: linux...@kvack.org
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-samsung-...@vger.kernel.org
Cc: linux-me...@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
---
drivers/gpu/drm/exynos/exynos_drm_g2d.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index ecede41af9b9..1e0c5a7f206e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -475,7 +475,8 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct g2d_data
*g2d,
goto err_free;
}
- ret = pin_user_pages_fast(start, npages, FOLL_FORCE | FOLL_WRITE,
+ ret = pin_user_pages_fast(start, npages,
+ FOLL_FORCE | FOLL_WRITE | FOLL_LONGTERM,
g2d_userptr->pages);
if (ret != npages) {
DRM_DEV_ERROR(g2d->dev,
--
2.29.2
