Initialize the phy_id to 0 to fix the warning of
"Using uninitialized value phy_id"

Signed-off-by: Ma Jun <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
index 8ed0e073656f..53d85fafd8ab 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
@@ -95,7 +95,7 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file 
*f, const char __u
        struct psp_context *psp = &adev->psp;
        struct ta_securedisplay_cmd *securedisplay_cmd;
        struct drm_device *dev = adev_to_drm(adev);
-       uint32_t phy_id;
+       uint32_t phy_id = 0;
        uint32_t op;
        char str[64];
        int ret;
@@ -135,6 +135,10 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct 
file *f, const char __u
                mutex_unlock(&psp->securedisplay_context.mutex);
                break;
        case 2:
+               if (size < 3) {
+                       dev_err(adev->dev, "Invalid input: %s\n", str);
+                       return -EINVAL;
+               }
                mutex_lock(&psp->securedisplay_context.mutex);
                psp_prep_securedisplay_cmd_buf(psp, &securedisplay_cmd,
                        TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC);
-- 
2.34.1

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