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From d059da84f0dee9afb90dd6b5f6c41611ac480c23 Mon Sep 17 00:00:00 2001
From: Colin Ian King <colin.king@canonical.com>
Date: Tue, 23 Jul 2019 15:23:12 +0100
Subject: [PATCH 3111/4256] drm/amd/display: fix a missing null check on a
failed kzalloc
Currently the allocation of config may fail and a null pointer
dereference on config can occur. Fix this by added a null
check on a failed allocation of config.
Addresses-Coverity: ("Dereference null return")
Fixes: c2cd9d04ecf0 ("drm/amd/display: Hook up calls to do stereo mux and dig programming to stereo control interface")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index ecf562e386cb..bc48e8e6ce4d 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1269,6 +1269,8 @@ bool dc_set_generic_gpio_for_stereo(bool enable,
struct gpio_generic_mux_config *config = kzalloc(sizeof(struct gpio_generic_mux_config),
GFP_KERNEL);
+ if (!config)
+ return false;
pin_info = dal_gpio_get_generic_pin_info(gpio_service, GPIO_ID_GENERIC, 0);
if (pin_info.mask == 0xFFFFFFFF || pin_info.offset == 0xFFFFFFFF) {
--
2.17.1
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