diff options
| author | lyndonli <Lyndon.Li@amd.com> | 2023-03-03 09:55:05 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-03-10 06:06:19 +0300 |
| commit | 8879ec6dfdcdcca7718eeb4a584805eb205288bf (patch) | |
| tree | 7c76098e89d8e7064389bc314c81e7f373e64f5b /drivers | |
| parent | 20534dbcc7b7bfb447279cdcfb0d88ee3b779a18 (diff) | |
| download | linux-8879ec6dfdcdcca7718eeb4a584805eb205288bf.tar.xz | |
drm/amdgpu: Fix the warning info when removing amdgpu device
Actually, the drm_dev_enter in psp_cmd_submit_buf does not
protect anything. If DRM device is unplugged, it will always
check the condition in WARN_ON. So drop drm_dev_enter and
drm_dev_exit in psp_cmd_submit_buf.
When removing amdgpu, the calling order is as follows:
amdgpu_pci_remove
drm_dev_unplug
amdgpu_driver_unload_kms
amdgpu_device_fini_hw
amdgpu_device_ip_fini_early
psp_hw_fini
psp_ras_terminate
psp_ta_unloadye
psp_cmd_submit_buf
[ 4507.740388] Call Trace:
[ 4507.740389] <TASK>
[ 4507.740391] psp_ta_unload+0x44/0x70 [amdgpu]
[ 4507.740485] psp_ras_terminate+0x4d/0x70 [amdgpu]
[ 4507.740575] psp_hw_fini+0x28/0xa0 [amdgpu]
[ 4507.740662] amdgpu_device_fini_hw+0x328/0x442 [amdgpu]
[ 4507.740791] amdgpu_driver_unload_kms+0x51/0x60 [amdgpu]
[ 4507.740875] amdgpu_pci_remove+0x5a/0x140 [amdgpu]
[ 4507.740962] ? _raw_spin_unlock_irqrestore+0x27/0x43
[ 4507.740965] ? __pm_runtime_resume+0x60/0x90
[ 4507.740968] pci_device_remove+0x39/0xb0
[ 4507.740971] device_remove+0x46/0x70
[ 4507.740972] device_release_driver_internal+0xd1/0x160
[ 4507.740974] driver_detach+0x4a/0x90
[ 4507.740975] bus_remove_driver+0x6c/0xf0
[ 4507.740976] driver_unregister+0x31/0x50
[ 4507.740977] pci_unregister_driver+0x40/0x90
[ 4507.740978] amdgpu_exit+0x15/0x120 [amdgpu]
v2: fix commit message style issue
Signed-off-by: lyndonli <Lyndon.Li@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 17 |
1 files changed, 1 insertions, 16 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index 28fe6d941054..3f5d13035aff 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -602,27 +602,14 @@ psp_cmd_submit_buf(struct psp_context *psp, struct psp_gfx_cmd_resp *cmd, uint64_t fence_mc_addr) { int ret; - int index, idx; + int index; int timeout = 20000; bool ras_intr = false; bool skip_unsupport = false; - bool dev_entered; if (psp->adev->no_hw_access) return 0; - dev_entered = drm_dev_enter(adev_to_drm(psp->adev), &idx); - /* - * We allow sending PSP messages LOAD_ASD and UNLOAD_TA without acquiring - * a lock in drm_dev_enter during driver unload because we must call - * drm_dev_unplug as the beginning of unload driver sequence . It is very - * crucial that userspace can't access device instances anymore. - */ - if (!dev_entered) - WARN_ON(psp->cmd_buf_mem->cmd_id != GFX_CMD_ID_LOAD_ASD && - psp->cmd_buf_mem->cmd_id != GFX_CMD_ID_UNLOAD_TA && - psp->cmd_buf_mem->cmd_id != GFX_CMD_ID_INVOKE_CMD); - memset(psp->cmd_buf_mem, 0, PSP_CMD_BUFFER_SIZE); memcpy(psp->cmd_buf_mem, cmd, sizeof(struct psp_gfx_cmd_resp)); @@ -686,8 +673,6 @@ psp_cmd_submit_buf(struct psp_context *psp, } exit: - if (dev_entered) - drm_dev_exit(idx); return ret; } |