[PATCH] drm/amdgpu: Add parameter NULL pointer check

[YiPeng Chai]

Add parameter NULL pointer check.

Signed-off-by: YiPeng Chai <yipeng.c...@amd.com>
---
 drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c 
b/drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c
index 44009aa8216e..7c100630f096 100644
--- a/drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c
+++ b/drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c
@@ -55,6 +55,9 @@ int amdgpu_xcp_drm_dev_alloc(struct drm_device **ddev)
        char dev_name[20];
        int ret, i;
 
+       if (!ddev)
+               return -EINVAL;
+
        guard(mutex)(&xcp_mutex);
 
        if (pdev_num >= MAX_XCP_PLATFORM_DEVICE)
-- 
2.43.0