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Signed-off-by: aakkll <94471752+aakkll@users.noreply.github.com> Signed-off-by: aakkll <94471752+aakkll@users.noreply.github.com>
34 lines
1.3 KiB
Diff
34 lines
1.3 KiB
Diff
From efaa0a55ce429107697f641921336cc51518693a Mon Sep 17 00:00:00 2001
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From: Brian Norris <briannorris@chromium.org>
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Date: Fri, 17 Jun 2022 17:26:52 -0700
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Subject: [PATCH 39/51] drm/rockchip: vop: Don't crash for invalid
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duplicate_state()
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It's possible for users to try to duplicate the CRTC state even when the
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state doesn't exist. drm_atomic_helper_crtc_duplicate_state() (and other
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users of __drm_atomic_helper_crtc_duplicate_state()) already guard this
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with a WARN_ON() instead of crashing, so let's do that here too.
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Fixes: 4e257d9eee23 ("drm/rockchip: get rid of rockchip_drm_crtc_mode_config")
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Signed-off-by: Brian Norris <briannorris@chromium.org>
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Reviewed-by: Sean Paul <seanpaul@chromium.org>
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Reviewed-by: Douglas Anderson <dianders@chromium.org>
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Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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Link: https://patchwork.freedesktop.org/patch/msgid/20220617172623.1.I62db228170b1559ada60b8d3e1637e1688424926@changeid
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---
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drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 3 +++
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1 file changed, 3 insertions(+)
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--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
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+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
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@@ -1573,6 +1573,9 @@ static struct drm_crtc_state *vop_crtc_d
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if (WARN_ON(!crtc->state))
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return NULL;
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+ if (WARN_ON(!crtc->state))
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+ return NULL;
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+
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rockchip_state = kzalloc(sizeof(*rockchip_state), GFP_KERNEL);
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if (!rockchip_state)
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return NULL;
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