Bug 203673 - xHCI can't get woken up by plugging USB devices when it's runtime suspended to D0
Summary: xHCI can't get woken up by plugging USB devices when it's runtime suspended t...
Status: RESOLVED CODE_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: PCI (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: drivers_pci@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-05-22 04:18 UTC by Kai-Heng Feng
Modified: 2019-10-25 07:00 UTC (History)
0 users

See Also:
Kernel Version: v5.2-rc1
Subsystem:
Regression: No
Bisected commit-id:

Attachments
lspci -vv (32.72 KB, text/plain)
2019-05-22 04:18 UTC, Kai-Heng Feng 		Details
acpidump (643.31 KB, text/plain)
2019-05-22 04:29 UTC, Kai-Heng Feng 		Details
dmesg (69.42 KB, text/plain)
2019-06-05 07:45 UTC, Kai-Heng Feng 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Kai-Heng Feng 2019-05-22 04:18:43 UTC 
Created attachment 282905 [details]
lspci -vv
Comment 1 Kai-Heng Feng 2019-05-22 04:26:10 UTC 
Vendor also confirms it's not supposed to be runtime suspended, so it's _S0W reports D0:

# acpidbg -b 'ex \_SB.PCI0.XHC0._S0W'
Evaluating \_SB.PCI0.XHC0._S0W
Evaluation of \_SB.PCI0.XHC0._S0W returned object 000000005b47428a, external buffer length 18
 [Integer] = 0000000000000000
Comment 2 Kai-Heng Feng 2019-05-22 04:29:02 UTC 
Created attachment 282907 [details]
acpidump
Comment 3 Kai-Heng Feng 2019-05-22 15:08:51 UTC 
Symptom and steps to reproduce the issue:
1) Enable runtime power management for the xHC controller, it's in D0 and PME signaling is enabled:
Status: D0 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
2) Plug a USB device to USB port
3) Nothing happens
Comment 4 Kai-Heng Feng 2019-06-05 07:45:38 UTC 
Created attachment 283109 [details]
dmesg
Comment 5 Kai-Heng Feng 2019-10-25 07:00:37 UTC 
Fixed by 6c4c5a0f0180137dba328d4f3cf9bd48961e7d24 x86/PCI: Avoid AMD FCH XHCI USB PME# from D0 defect
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