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Message-Id: <20240624024835.2278651-1-make24@iscas.ac.cn>
Date: Mon, 24 Jun 2024 10:48:35 +0800
From: Ma Ke <make24@...as.ac.cn>
To: harry.wentland@....com,
sunpeng.li@....com,
Rodrigo.Siqueira@....com,
alexander.deucher@....com,
christian.koenig@....com,
Xinhui.Pan@....com,
airlied@...il.com,
daniel@...ll.ch,
wenjing.liu@....com,
jun.lei@....com,
hamza.mahfooz@....com,
alex.hung@....com,
alvin.lee2@....com,
george.shen@....com,
dillon.varone@....com
Cc: amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
Ma Ke <make24@...as.ac.cn>
Subject: [PATCH] drm/amd/display: Check pipe_ctx before it is used
resource_get_otg_master_for_stream() could return NULL, we
should check the return value of 'otg_master' before it is
used in resource_log_pipe_for_stream().
Signed-off-by: Ma Ke <make24@...as.ac.cn>
---
drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 15819416a2f3..597ca9f369c6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -2279,6 +2279,8 @@ void resource_log_pipe_topology_update(struct dc *dc, struct dc_state *state)
state->stream_status[stream_idx].mall_stream_config.paired_stream);
otg_master = resource_get_otg_master_for_stream(
&state->res_ctx, state->streams[phantom_stream_idx]);
+ if (!otg_master)
+ continue;
resource_log_pipe_for_stream(dc, state, otg_master, stream_idx);
}
}
--
2.25.1
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