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| author | Chong Li <chongli2@amd.com> | 2023-04-14 13:51:19 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-09 10:34:06 +0200 |
| commit | 787e74b21394f126bbce355839dcce9b0ad256d2 (patch) | |
| tree | 4d8f82c09ad99a93002d2da6bcb82744193c3c7b /drivers/watchdog | |
| parent | e2feb39312a6923146af96ebc8e0e5405d673aad (diff) | |
| download | linux-787e74b21394f126bbce355839dcce9b0ad256d2.tar.gz linux-787e74b21394f126bbce355839dcce9b0ad256d2.tar.bz2 linux-787e74b21394f126bbce355839dcce9b0ad256d2.zip | |
drm/amdgpu: release gpu full access after "amdgpu_device_ip_late_init"
[ Upstream commit 38eecbe086a4e52f54b2bbda8feba65d44addbef ]
[WHY]
Function "amdgpu_irq_update()" called by "amdgpu_device_ip_late_init()" is an atomic context.
We shouldn't access registers through KIQ since "msleep()" may be called in "amdgpu_kiq_rreg()".
[HOW]
Move function "amdgpu_virt_release_full_gpu()" after function "amdgpu_device_ip_late_init()",
to ensure that registers be accessed through RLCG instead of KIQ.
Call Trace:
<TASK>
show_stack+0x52/0x69
dump_stack_lvl+0x49/0x6d
dump_stack+0x10/0x18
__schedule_bug.cold+0x4f/0x6b
__schedule+0x473/0x5d0
? __wake_up_klogd.part.0+0x40/0x70
? vprintk_emit+0xbe/0x1f0
schedule+0x68/0x110
schedule_timeout+0x87/0x160
? timer_migration_handler+0xa0/0xa0
msleep+0x2d/0x50
amdgpu_kiq_rreg+0x18d/0x1f0 [amdgpu]
amdgpu_device_rreg.part.0+0x59/0xd0 [amdgpu]
amdgpu_device_rreg+0x3a/0x50 [amdgpu]
amdgpu_sriov_rreg+0x3c/0xb0 [amdgpu]
gfx_v10_0_set_gfx_eop_interrupt_state.constprop.0+0x16c/0x190 [amdgpu]
gfx_v10_0_set_eop_interrupt_state+0xa5/0xb0 [amdgpu]
amdgpu_irq_update+0x53/0x80 [amdgpu]
amdgpu_irq_get+0x7c/0xb0 [amdgpu]
amdgpu_fence_driver_hw_init+0x58/0x90 [amdgpu]
amdgpu_device_init.cold+0x16b7/0x2022 [amdgpu]
Signed-off-by: Chong Li <chongli2@amd.com>
Reviewed-by: JingWen.Chen2@amd.com
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/watchdog')
0 files changed, 0 insertions, 0 deletions