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Date: Fri, 22 Mar 2019 12:13:58 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Philipp Zabel <p.zabel@...gutronix.de>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.14 010/183] drm/imx: ignore plane updates on disabled crtcs 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 4fb873c9648e383206e0a91cef9b03aa54066aca ] This patch fixes backtraces like the following when sending SIGKILL to a process with a currently pending plane update: [drm:ipu_plane_atomic_check] CRTC should be enabled [drm:drm_framebuffer_remove] *ERROR* failed to commit ------------[ cut here ]------------ WARNING: CPU: 3 PID: 63 at drivers/gpu/drm/drm_framebuffer.c:926 drm_framebuffer_remove+0x47c/0x498 atomic remove_fb failed with -22 Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/gpu/drm/imx/ipuv3-plane.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c index cf98596c7ce1..d0d7f6adbc89 100644 --- a/drivers/gpu/drm/imx/ipuv3-plane.c +++ b/drivers/gpu/drm/imx/ipuv3-plane.c @@ -348,9 +348,9 @@ static int ipu_plane_atomic_check(struct drm_plane *plane, if (ret) return ret; - /* CRTC should be enabled */ + /* nothing to check when disabling or disabled */ if (!crtc_state->enable) - return -EINVAL; + return 0; switch (plane->type) { case DRM_PLANE_TYPE_PRIMARY: -- 2.19.1
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