Commit 4fb873c9 authored Nov 05, 2018 by Philipp Zabel

drm/imx: ignore plane updates on disabled crtcs



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@pengutronix.de>

parent bfeffd15

drivers/gpu/drm/imx/ipuv3-plane.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -370,9 +370,9 @@ 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:

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