dc.c:use kzalloc without test

BugLink: https://bugs.launchpad.net/bugs/1852338
[ Upstream commit 364593f3ee5fdefc6efd89475e1804c928b4e6ba ]

dc.c:583:null check is needed after using kzalloc function

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: zhongshiqi <zhong.shiqi@zte.com.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Connor Kuehl <connor.kuehl@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 730f97ba8dbbed4ee31da6cfc2aef11c0d3bcbd8..dd4731ab935cd75560d98f81b1a46d7ab8cd8aab 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -566,6 +566,10 @@ static bool construct(struct dc *dc,
 #ifdef CONFIG_DRM_AMD_DC_DCN2_0
        // Allocate memory for the vm_helper
        dc->vm_helper = kzalloc(sizeof(struct vm_helper), GFP_KERNEL);
+       if (!dc->vm_helper) {
+               dm_error("%s: failed to create dc->vm_helper\n", __func__);
+               goto fail;
+       }
 
 #endif
        memcpy(&dc->bb_overrides, &init_params->bb_overrides, sizeof(dc->bb_overrides));