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From 00945f34e5a39d48bb666c20a3d02daed42ab6cd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ernst=20Sj=C3=B6strand?= <ernstp@gmail.com>
Date: Tue, 7 Nov 2017 21:06:58 +0100
Subject: [PATCH 2690/4131] amdgpu/dc: Fix potential null dereferences in
amdgpu_dm.c
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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 | 9 +++++++++
1 file changed, 9 insertions(+)
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 903e6ed..8e8d585 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2670,6 +2670,8 @@ dm_crtc_duplicate_state(struct drm_crtc *crtc)
return NULL;
state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return NULL;
__drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
@@ -3736,6 +3738,8 @@ create_i2c(struct ddc_service *ddc_service,
struct amdgpu_i2c_adapter *i2c;
i2c = kzalloc(sizeof(struct amdgpu_i2c_adapter), GFP_KERNEL);
+ if (!i2c)
+ return NULL;
i2c->base.owner = THIS_MODULE;
i2c->base.class = I2C_CLASS_DDC;
i2c->base.dev.parent = &adev->pdev->dev;
@@ -3766,6 +3770,11 @@ static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
DRM_DEBUG_DRIVER("%s()\n", __func__);
i2c = create_i2c(link->ddc, link->link_index, &res);
+ if (!i2c) {
+ DRM_ERROR("Failed to create i2c adapter data\n");
+ return -ENOMEM;
+ }
+
aconnector->i2c = i2c;
res = i2c_add_adapter(&i2c->base);
--
2.7.4
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