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drm/amdgpu: handle amdgpu_cgs_create_device() errors in amd_powerplay_create()

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[ Upstream commit 1435e895d4fc967d64e9f5bf81e992ac32f5ac76 ]

Add error handling to propagate amdgpu_cgs_create_device() failures
to the caller. When amdgpu_cgs_create_device() fails, release hwmgr
and return -ENOMEM to prevent null pointer dereference.

[v1]->[v2]: Change error code from -EINVAL to -ENOMEM. Free hwmgr.

Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wentao Liang
2025-03-06 15:51:48 +08:00
committed by Greg Kroah-Hartman
parent dd686b699b
commit 55ef52c30c
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
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@@ -51,6 +51,11 @@ static int amd_powerplay_create(struct amdgpu_device *adev)
hwmgr->adev = adev;
hwmgr->not_vf = !amdgpu_sriov_vf(adev);
hwmgr->device = amdgpu_cgs_create_device(adev);
if (!hwmgr->device) {
kfree(hwmgr);
return -ENOMEM;
}
mutex_init(&hwmgr->msg_lock);
hwmgr->chip_family = adev->family;
hwmgr->chip_id = adev->asic_type;