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authorMaxime Ripard <maxime@cerno.tech>2020-11-02 13:17:54 +0300
committerMaxime Ripard <maxime@cerno.tech>2020-11-02 13:17:54 +0300
commitc489573b5b6ce6442ad4658d9d5ec77839b91622 (patch)
tree6db35e19cfb4c1280033a5545c94e15ac9c7b863 /drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
parentd23bce963e7f17738374d700f0dc5464c5f7cba2 (diff)
parent3cea11cd5e3b00d91caf0b4730194039b45c5891 (diff)
downloadlinux-c489573b5b6ce6442ad4658d9d5ec77839b91622.tar.xz
Merge drm/drm-next into drm-misc-next
Daniel needs -rc2 in drm-misc-next to merge some patches Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index f3416cc1bd04..bd6e6641c3fc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1043,6 +1043,7 @@ static int amdgpu_ttm_tt_pin_userptr(struct ttm_bo_device *bdev,
release_sg:
kfree(ttm->sg);
+ ttm->sg = NULL;
return r;
}
@@ -1186,7 +1187,12 @@ static int amdgpu_ttm_backend_bind(struct ttm_bo_device *bdev,
}
/**
- * amdgpu_ttm_alloc_gart - Allocate GART memory for buffer object
+ * amdgpu_ttm_alloc_gart - Make sure buffer object is accessible either
+ * through AGP or GART aperture.
+ *
+ * If bo is accessible through AGP aperture, then use AGP aperture
+ * to access bo; otherwise allocate logical space in GART aperture
+ * and map bo to GART aperture.
*/
int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
{