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From d965c89a8949030acf1d4ba92ae1d7633dab2d48 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ernst=20Sj=C3=B6strand?= <ernstp@gmail.com>
Date: Tue, 7 Nov 2017 21:06:59 +0100
Subject: [PATCH 2691/4131] amdgpu/dc: Fix missing null checks in amdgpu_dm.c
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From smatch:
error: we previously assumed X could be null
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Ernst Sjöstrand <ernstp@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 8e8d585..bed59da 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -442,10 +442,12 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
/* Display Core create. */
adev->dm.dc = dc_create(&init_data);
- if (adev->dm.dc)
+ if (adev->dm.dc) {
DRM_INFO("Display Core initialized!\n");
- else
+ } else {
DRM_INFO("Display Core failed to initialize!\n");
+ goto error;
+ }
INIT_WORK(&adev->dm.mst_hotplug_work, hotplug_notify_work_func);
@@ -2418,7 +2420,7 @@ decide_crtc_timing_for_drm_display_mode(struct drm_display_mode *drm_mode,
}
}
-static void create_fake_sink(struct amdgpu_dm_connector *aconnector)
+static int create_fake_sink(struct amdgpu_dm_connector *aconnector)
{
struct dc_sink *sink = NULL;
struct dc_sink_init_data sink_init_data = { 0 };
@@ -2427,14 +2429,18 @@ static void create_fake_sink(struct amdgpu_dm_connector *aconnector)
sink_init_data.sink_signal = aconnector->dc_link->connector_signal;
sink = dc_sink_create(&sink_init_data);
- if (!sink)
+ if (!sink) {
DRM_ERROR("Failed to create sink!\n");
+ return -ENOMEM;
+ }
sink->sink_signal = SIGNAL_TYPE_VIRTUAL;
aconnector->fake_enable = true;
aconnector->dc_sink = sink;
aconnector->dc_link->local_sink = sink;
+
+ return 0;
}
static struct dc_stream_state *
@@ -2468,7 +2474,8 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
if (aconnector->mst_port)
goto stream_create_fail;
- create_fake_sink(aconnector);
+ if (create_fake_sink(aconnector))
+ goto stream_create_fail;
}
stream = dc_create_stream_for_sink(aconnector->dc_sink);
--
2.7.4
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