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Message #23395
[Bug 1690362] Re: Exar usb-serial doesn't restore baud rate after resume from S3/S4
** Changed in: linux-oem (Ubuntu Bionic)
Status: Fix Committed => Fix Released
** Changed in: linux (Ubuntu Bionic)
Status: Fix Released => Triaged
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https://bugs.launchpad.net/bugs/1690362
Title:
Exar usb-serial doesn't restore baud rate after resume from S3/S4
Status in HWE Next:
Fix Released
Status in linux package in Ubuntu:
Triaged
Status in linux-oem package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
Status in linux-oem source package in Xenial:
Invalid
Status in linux source package in Bionic:
Triaged
Status in linux-oem source package in Bionic:
Fix Released
Bug description:
Resume from suspend-to-ram and suspend-to-disk should restore data send/receive over Exar usb-serial ports. The XR21V1412 ports were using the hardware power-on default of 9600bps
after resume from S3/S4. This patch re-initializes the baud rate and fixes the re-connection issues after resume from S3/S4.
This bug is to track the integration of the driver released by the
vendor to fix this issue.
Changelog:
Version 1B, 11/6/2015
Fixed Bug: The conditional logic to support kernel 3.9 was incorrect(line 396 in xr_usb_serial_common.c).
Version 1A, 1/9/2015
This driver will work with any USB UART function in these Exar devices:
XR21V1410/1412/1414
XR21B1411
XR21B1420/1422/1424
XR22801/802/804
Exar serial devices are typically enuremated as /dev/ttyXRUSB[0-3]
This bug is used for tracking purposes, please do not triage.
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