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drm/amdgpu: Fix the uninitialized variable warning

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[ Upstream commit 7e39d7ec35883a168343ea02f40e260e176c6c63 ]

Check the user input and phy_id value range to fix
"Using uninitialized value phy_id"

Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ma Jun
2024-04-24 15:44:56 +08:00
committed by Greg Kroah-Hartman
parent 3ad44174a5
commit f71ef2bb69
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c
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@@ -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 || phy_id >= TA_SECUREDISPLAY_MAX_PHY) {
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);