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24 lines
829 B
Diff
24 lines
829 B
Diff
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From 02e41ddac8a960df7defaa377c1d3d981ac0a652 Mon Sep 17 00:00:00 2001
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From: Dom Cobley <popcornmix@gmail.com>
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Date: Wed, 27 Apr 2022 14:45:35 +0100
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Subject: [PATCH] drm/vc4_kms: Protect hvs dereference on fkms
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fkms has a null hvs pointer so this crashes. Protect against it
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Signed-off-by: Dom Cobley <popcornmix@gmail.com>
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---
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drivers/gpu/drm/vc4/vc4_kms.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_kms.c
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@@ -354,7 +354,7 @@ static void vc4_atomic_commit_tail(struc
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struct vc4_hvs_state *new_hvs_state;
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struct drm_crtc *crtc;
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struct vc4_hvs_state *old_hvs_state;
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- unsigned long max_clock_rate = clk_get_max_rate(hvs->core_clk);
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+ unsigned long max_clock_rate = hvs ? clk_get_max_rate(hvs->core_clk) : 0;
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unsigned int channel;
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int i;
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