[SRU] [B/C] [PATCH 0/1] Fix Terminus USB hub that may breaks connected USB devices after S3
Kai-Heng Feng
kai.heng.feng at canonical.com
Wed Dec 5 09:41:14 UTC 2018
BugLink: https://bugs.launchpad.net/bugs/1806850
[Impact]
USB devices connected to Terminus USB hub stop working after S3.
[Fix]
The Terminus hub seems to have a rather slow reset command, so we need
to wait for extra time before doing any further action.
[Test]
After applying the fix, USB devices connected to the HUB no longer stop
functioning after S3.
[Regression Potential]
Low. Although the fix affects all devices connect to the HUB, it has no
functional change other than imposes longer delay time.
Kai-Heng Feng (1):
USB: Wait for extra delay time after USB_PORT_FEAT_RESET for quirky
hub
Documentation/admin-guide/kernel-parameters.txt | 2 ++
drivers/usb/core/hub.c | 14 +++++++++++---
drivers/usb/core/quirks.c | 6 ++++++
include/linux/usb/quirks.h | 3 +++
4 files changed, 22 insertions(+), 3 deletions(-)
--
2.17.1
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