Using the wrong macro for soc15 register access.
Reviewed-by: monk liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Rather than using a hardcoded value.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Add new RIDs.
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Xie <AlexBin.Xie@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This reverts commit cb341a31.

The purpose of the refactor was for amdgpu_crtc_prepare/submit_flip to
be used by the DC code, but that's no longer the case.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Some of these paths probably cannot be interrupted by a signal anyway.
Those that can would fail to clean up things if they actually got
interrupted.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Add functions to disable dpm for S3/S4.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Disable ctf in eventmgr to fix S3/S4 support.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

export disablesmcctf to eventmgr.
need to disable temperature alert when s3/s4.
otherwise, when resume back,enable temperature
alert will fail.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

the case could happen when gpu reset:
1. when gpu reset, cs can be continue until sw queue is full, then push job will wait with holding pd reservation.
2. gpu_reset routine will also need pd reservation to restore page table from their shadow.
3. cs is waiting for gpu_reset complete, but gpu reset is waiting for cs releases reservation.

v2: handle amdgpu_cs_submit error path.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

v2: 64-bit aligned for gpu info
v3: squash in wave_front_fix
Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Qiang Yu <Qiang.Yu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Those functions are all unused and some not even implemented.

v2: keep cgs_get_pci_resource, it is used by the ACP driver.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

run gpu test auto reboot when enable cks right now.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

There is no good mechanism to handle the corresponding error.
When signal interrupt happens, unpin is not called.
As a result, inside AMDGPU, the statistic of pin size will be wrong.
Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Either in cgs functions or for callers of cgs functions:
1. The signal interrupt can affect the expected behaviour
2. There is no good mechanism to handle the corresponding error
3. There is no chance of deadlock in these single BO waiting
4. There is no clear benefit for interruptible waiting
5. Future caller of these functions might have same issue.
Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

[  141.420491] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030
[  141.420532] IP: [<ffffffff81579ee1>] fence_remove_callback+0x11/0x60
[  141.420563] PGD 20a030067
[  141.420575] PUD 2088ca067
[  141.420587] PMD 0

[  141.420599] Oops: 0000 [#1] SMP
[  141.420612] Modules linked in: amdgpu(OE) ttm(OE) drm_kms_helper(E) drm(E) i2c_algo_bit(E) fb_sys_fops(E) syscopyarea(E) sysfillrect(E) sysimgblt(E) rpcsec_gss_krb5(E) nfsv4(E) nfs(E) fscache(E) eeepc_wmi(E) asus_wmi(E) sparse_keymap(E) snd_hda_codec_realtek(E) video(E) snd_hda_codec_generic(E) snd_hda_codec_hdmi(E) snd_hda_intel(E) joydev(E) snd_hda_codec(E) snd_seq_midi(E) snd_seq_midi_event(E) snd_hda_core(E) snd_hwdep(E) snd_rawmidi(E) snd_pcm(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) snd_seq(E) crc32_pclmul(E) ghash_clmulni_intel(E) snd_seq_device(E) snd_timer(E) aesni_intel(E) aes_x86_64(E) lrw(E) gf128mul(E) glue_helper(E) ablk_helper(E) cryptd(E) snd(E) soundcore(E) serio_raw(E) shpchp(E) i2c_piix4(E) i2c_designware_platform(E) 8250_dw(E) i2c_designware_core(E) mac_hid(E) binfmt_misc(E)
[  141.420948]  nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sunrpc(E) parport_pc(E) ppdev(E) lp(E) parport(E) autofs4(E) hid_generic(E) usbhid(E) hid(E) psmouse(E) r8169(E) ahci(E) mii(E) libahci(E) wmi(E)
[  141.421042] CPU: 14 PID: 223 Comm: kworker/14:2 Tainted: G           OE   4.9.0-custom #4
[  141.421074] Hardware name: System manufacturer System Product Name/PRIME B350-PLUS, BIOS 0606 04/06/2017
[  141.421146] Workqueue: events amd_sched_job_timedout [amdgpu]
[  141.421169] task: ffff88020b03ba80 task.stack: ffffc900016f4000
[  141.421193] RIP: 0010:[<ffffffff81579ee1>]  [<ffffffff81579ee1>] fence_remove_callback+0x11/0x60
[  141.421229] RSP: 0018:ffffc900016f7d30  EFLAGS: 00010202
[  141.421250] RAX: ffff8801c049fc00 RBX: ffff8801d4d8dc00 RCX: 0000000000000000
[  141.421278] RDX: 0000000000000001 RSI: ffff8801c049fcc0 RDI: 0000000000000000
[  141.421307] RBP: ffffc900016f7d48 R08: 0000000000000000 R09: 0000000000000000
[  141.421334] R10: 00000020ed512a30 R11: 0000000000000001 R12: 0000000000000000
[  141.421362] R13: ffff880209ba4ba0 R14: ffff880209ba4c58 R15: ffff8801c055cc60
[  141.421390] FS:  0000000000000000(0000) GS:ffff88021ef80000(0000) knlGS:0000000000000000
[  141.421421] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.421443] CR2: 0000000000000030 CR3: 000000020b554000 CR4: 00000000003406e0
[  141.421471] Stack:
[  141.421480]  ffff8801d4d8dc00 ffff880209ba4c48 ffff880209ba4ba0 ffffc900016f7d78
[  141.421513]  ffffffffa0697920 ffff880209ba0000 0000000000000000 ffff880209ba2770
[  141.421549]  ffff880209ba4b08 ffffc900016f7df0 ffffffffa05ce2ae ffffffffa0509eb7
[  141.421583] Call Trace:
[  141.421628]  [<ffffffffa0697920>] amd_sched_hw_job_reset+0x50/0xb0 [amdgpu]
[  141.421676]  [<ffffffffa05ce2ae>] amdgpu_gpu_reset+0x8e/0x690 [amdgpu]
[  141.421712]  [<ffffffffa0509eb7>] ? drm_printk+0x97/0xa0 [drm]
[  141.421770]  [<ffffffffa0698156>] amdgpu_job_timedout+0x46/0x50 [amdgpu]
[  141.421829]  [<ffffffffa0696a07>] amd_sched_job_timedout+0x17/0x20 [amdgpu]
[  141.421859]  [<ffffffff81095493>] process_one_work+0x153/0x3f0
[  141.421884]  [<ffffffff81095c5b>] worker_thread+0x12b/0x4b0
[  141.421907]  [<ffffffff81095b30>] ? rescuer_thread+0x350/0x350
[  141.421931]  [<ffffffff8109b423>] kthread+0xd3/0xf0
[  141.421951]  [<ffffffff8109b350>] ? kthread_park+0x60/0x60
[  141.421975]  [<ffffffff817e1ee5>] ret_from_fork+0x25/0x30
[  141.421996] Code: ac 81 e8 a3 1f b0 ff 48 c7 c0 ea ff ff ff e9 48 ff ff ff 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 49 89 fc 53 <48> 8b 7f 30 48 89 f3 e8 73 7c 26 00 48 8b 13 48 39 d3 41 0f 95
[  141.422156] RIP  [<ffffffff81579ee1>] fence_remove_callback+0x11/0x60
[  141.422183]  RSP <ffffc900016f7d30>
[  141.422197] CR2: 0000000000000030
[  141.433483] ---[ end trace bc0949bf7ddd6d4b ]---

if the job is reset twice, then the parent could be NULL.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger.He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1. The signal interrupt can affect the expected behaviour.
2. There is no good mechanism to handle the corresponding error.
When signal interrupt happens, unpin is not called.
As a result, inside AMDGPU, the statistic of pin size will be wrong.
Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1. The signal interrupt can affect the expected behaviour.
2. There is no good mechanism to handle the corresponding error.
Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1. The signal interrupt can affect the expected behaviour.
2. There is no good mechanism to handle the corresponding error.
Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1. The signal interrupt can affect the expected behaviour.
2. There is no mechanism to handle the corresponding error.
Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

If amdgpu_bo_reserve function is interrupted by signal,
amdgpu_bo_kunmap function is not called.
Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Avoid big roundoff errors in scanline/hactive durations for
high pixel clocks, especially for >= 500 Mhz, and thereby
program more accurate display fifo watermarks.

This is a port of the corresponding amdgpu patch.

Implemented for DCE 4,6,8.
Tested on Evergreen/DCE-4 with Radeon HD-5770.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

At dot clocks > approx. 250 Mhz, some of these calcs will overflow and
cause miscalculation of latency watermarks, and for some overflows also
divide-by-zero driver crash. Make calcs more overflow resistant.

This is a direct port of the corresponding patch from amdgpu-kms,
copy-paste for cik from dce-8 and si from dce-6, with a slightly
simpler variant for evergreen dce-4/5.

Only tested on DCE-4 evergreen with a Radeon HD-5770.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This apparently got lost when implementing the new DCE-6 support
and would cause failures in pageflip scheduling and timestamping.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Function radeon_fence_emit() returns -ENOMEM if there is no enough
memory. And in this case, function radeon_ring_unlock_undo() rather than
function radeon_ring_unlock_commit() should be called. However, in
function radeon_test_create_and_emit_fence(), the return value of
radeon_fence_emit() is ignored. This patch adds the check.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Function radeon_ring_lock() returns an errno on failure, and its return
value should be validated. However, in functions r420_cp_errata_init()
and r420_cp_errata_fini(), its return value is not checked. This patch
adds the checks.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Enable UVD block for SRIOV.
Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Add UVD hw init.
Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Add UVD doorbell for SRIOV.
Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Add UVD initialization for SRIOV.
Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Used virt_alloc_mm_table function to allocate MM table memory.
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Add two functions to allocate & free MM table memory.
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Move mm table construction functions into mmsch header file so that
UVD can reuse it.
Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Fixed PSP loading issue for sriov.
Signed-off-by: Daniel Wang <Daniel.Wang2@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Now GPU hypervisor will load SDMA and RLCG ucode, so skip it
in guest.
Signed-off-by: Daniel Wang <Daniel.Wang2@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

[  413.687439] BUG: unable to handle kernel NULL pointer dereference at 0000000000000548
[  413.687479] IP: [<ffffffff8109b175>] to_live_kthread+0x5/0x60
[  413.687507] PGD 1efd12067
[  413.687519] PUD 1efd11067
[  413.687531] PMD 0

[  413.687543] Oops: 0000 [#1] SMP
[  413.687557] Modules linked in: amdgpu(OE) ttm(OE) drm_kms_helper(E) drm(E) i2c_algo_bit(E) fb_sys_fops(E) syscopyarea(E) sysfillrect(E) sysimgblt(E) rpcsec_gss_krb5(E) nfsv4(E) nfs(E) fscache(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) snd_hda_codec_hdmi(E) snd_hda_intel(E) eeepc_wmi(E) snd_hda_codec(E) asus_wmi(E) snd_hda_core(E) sparse_keymap(E) snd_hwdep(E) video(E) snd_pcm(E) snd_seq_midi(E) joydev(E) snd_seq_midi_event(E) snd_rawmidi(E) snd_seq(E) snd_seq_device(E) snd_timer(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) snd(E) crc32_pclmul(E) ghash_clmulni_intel(E) soundcore(E) aesni_intel(E) aes_x86_64(E) lrw(E) gf128mul(E) glue_helper(E) ablk_helper(E) cryptd(E) shpchp(E) serio_raw(E) i2c_piix4(E) 8250_dw(E) i2c_designware_platform(E) i2c_designware_core(E) mac_hid(E) binfmt_misc(E)
[  413.687894]  parport_pc(E) ppdev(E) lp(E) parport(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sunrpc(E) autofs4(E) hid_generic(E) usbhid(E) hid(E) psmouse(E) ahci(E) r8169(E) mii(E) libahci(E) wmi(E)
[  413.687989] CPU: 13 PID: 1134 Comm: kworker/13:2 Tainted: G           OE   4.9.0-custom #4
[  413.688019] Hardware name: System manufacturer System Product Name/PRIME B350-PLUS, BIOS 0606 04/06/2017
[  413.688089] Workqueue: events amd_sched_job_timedout [amdgpu]
[  413.688116] task: ffff88020f9657c0 task.stack: ffffc90001a88000
[  413.688139] RIP: 0010:[<ffffffff8109b175>]  [<ffffffff8109b175>] to_live_kthread+0x5/0x60
[  413.688171] RSP: 0018:ffffc90001a8bd60  EFLAGS: 00010282
[  413.688191] RAX: ffff88020f0073f8 RBX: ffff88020f000000 RCX: 0000000000000000
[  413.688217] RDX: 0000000000000001 RSI: ffff88020f9670c0 RDI: 0000000000000000
[  413.688243] RBP: ffffc90001a8bd78 R08: 0000000000000000 R09: 0000000000001000
[  413.688269] R10: 0000006051b11a82 R11: 0000000000000001 R12: 0000000000000000
[  413.688295] R13: ffff88020f002770 R14: ffff88020f004838 R15: ffff8801b23c2c60
[  413.688321] FS:  0000000000000000(0000) GS:ffff88021ef40000(0000) knlGS:0000000000000000
[  413.688352] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  413.688373] CR2: 0000000000000548 CR3: 00000001efd0f000 CR4: 00000000003406e0
[  413.688399] Stack:
[  413.688407]  ffffffff8109b304 ffff88020f000000 0000000000000070 ffffc90001a8bdf0
[  413.688439]  ffffffffa05ce29d ffffffffa052feb7 ffffffffa07b5820 ffffc90001a8bda0
[  413.688470]  ffffffff00000018 ffff8801bb88f060 0000000001a8bdb8 ffff88021ef59280
[  413.688502] Call Trace:
[  413.688514]  [<ffffffff8109b304>] ? kthread_park+0x14/0x60
[  413.688555]  [<ffffffffa05ce29d>] amdgpu_gpu_reset+0x7d/0x670 [amdgpu]
[  413.688589]  [<ffffffffa052feb7>] ? drm_printk+0x97/0xa0 [drm]
[  413.688643]  [<ffffffffa0698136>] amdgpu_job_timedout+0x46/0x50 [amdgpu]
[  413.688700]  [<ffffffffa06969e7>] amd_sched_job_timedout+0x17/0x20 [amdgpu]
[  413.688727]  [<ffffffff81095493>] process_one_work+0x153/0x3f0
[  413.688751]  [<ffffffff81095c5b>] worker_thread+0x12b/0x4b0
[  413.688773]  [<ffffffff8100392e>] ? do_syscall_64+0x6e/0x180
[  413.688795]  [<ffffffff81095b30>] ? rescuer_thread+0x350/0x350
[  413.688818]  [<ffffffff8100392e>] ? do_syscall_64+0x6e/0x180
[  413.688839]  [<ffffffff8109b423>] kthread+0xd3/0xf0
[  413.688858]  [<ffffffff8109b350>] ? kthread_park+0x60/0x60
[  413.688881]  [<ffffffff817e1ee5>] ret_from_fork+0x25/0x30
[  413.688901] Code: 25 40 d3 00 00 48 8b 80 48 05 00 00 48 89 e5 5d 48 8b 40 c8 48 c1 e8 02 83 e0 01 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <48> 8b b7 48 05 00 00 55 48 89 e5 48 85 f6 74 31 8b 97 f8 18 00
[  413.689045] RIP  [<ffffffff8109b175>] to_live_kthread+0x5/0x60
[  413.689064]  RSP <ffffc90001a8bd60>
[  413.689076] CR2: 0000000000000548
[  413.697985] ---[ end trace 0a314a64821f84e9 ]---

The root cause is some ring doesn't have scheduler, like KIQ ring
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>