diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0411-drm-amd-display-Fix-race.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0411-drm-amd-display-Fix-race.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0411-drm-amd-display-Fix-race.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0411-drm-amd-display-Fix-race.patch new file mode 100644 index 00000000..f6c4afc5 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0411-drm-amd-display-Fix-race.patch @@ -0,0 +1,41 @@ +From f64a2500a88d1ce8a257b26c07b809ef5c3cb4f6 Mon Sep 17 00:00:00 2001 +From: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com> +Date: Fri, 5 May 2017 11:30:06 -0400 +Subject: [PATCH 0411/4131] drm/amd/display: Fix race. + +Problem : +A race between two adjecent page flips makes the earlier one +to release an alocated frame buffer for the subsequent one - +since there are 2 frambuffer swapped back and forth between flips, +the 'new' fb of the later flip is actually the 'previous' fb for the earlier flip. +Fix: +Don't set fb->address = 0 in cleanup hook, this is unnecessery and +erases the newly cached adress that was set in prepare_fb of the second +flip. + +Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com> +Reviewed-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com> +Acked-by: Harry Wentland <Harry.Wentland@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c | 4 +--- + 1 file changed, 1 insertion(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c +index a5218b6..00cc385 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c +@@ -1793,9 +1793,7 @@ static void dm_plane_helper_cleanup_fb( + amdgpu_bo_unpin(rbo); + amdgpu_bo_unreserve(rbo); + amdgpu_bo_unref(&rbo); +- } +- +- afb->address = 0; ++ }; + } + + int dm_create_validation_set_for_connector(struct drm_connector *connector, +-- +2.7.4 + |