| 2020-02-18 10:13:06 |
Shrirang Bagul |
bug |
|
|
added bug |
| 2020-02-18 10:13:17 |
Shrirang Bagul |
nominated for series |
|
Ubuntu Bionic |
|
| 2020-02-18 10:13:17 |
Shrirang Bagul |
bug task added |
|
linux (Ubuntu Bionic) |
|
| 2020-02-18 10:14:01 |
Shrirang Bagul |
description |
[SRU Justification]
[Impact]
Dell Edge 300x IoT Gateways have a relative humidity sensor hts221. The sensor stops working (and reports stale values) after the system resumes from suspend-to-ram/suspend-to-disk PM states.
== Fix ==
AV_CONF register (RH & TEMP. oversampling ratio's) and CTRL1 register (ODR & BDU settings) values are lost after suspend.
While the change in AV_CONF updates the sensor resolution modes (overriding the user configuration before the device went to suspend); loss of the contents of the CTRL1 register leads to failure in reading sensor
This patch restores the AV_CONF & CTRL1 registers after
Already submitted upstream for both 4.17.y and 4.14.y (LTS) for review:
4.17.y: https://marc.info/?t=152455871600007&r=1&w=2
4.14.y: https://marc.info/?t=152506242000001&r=1&w=2
However, the issue is only affecting the Dell GW and not ST micro devel. boards.
== Risk of Regression ==
Low.Tthe bug affects only the Dell GW and the patch is being carried in linux-oem (4.15.y) since last 2 years without any regression.
This bug is for tracking purposes only, please don't triage. |
[SRU Justification]
[Impact]
Dell Edge 300x IoT Gateways have a relative humidity sensor hts221. The sensor stops working (and reports stale values) after the system resumes from suspend-to-ram/suspend-to-disk PM states.
== Fix ==
AV_CONF register (RH & TEMP. oversampling ratio's) and CTRL1 register (ODR & BDU settings) values are lost after suspend.
While the change in AV_CONF updates the sensor resolution modes (overriding the user configuration before the device went to suspend); loss of the contents of the CTRL1 register leads to failure in reading sensor
This patch restores the AV_CONF & CTRL1 registers after
Already submitted upstream for both 4.17.y and 4.14.y (LTS) for review:
4.17.y: https://marc.info/?t=152455871600007&r=1&w=2
4.14.y: https://marc.info/?t=152506242000001&r=1&w=2
However, the issue is only affecting the Dell GW and not ST micro devel. boards.
== Risk of Regression ==
Low.Tthe bug affects only the Dell GW and the patch is being carried in linux-oem (4.15.y) since last 2 years without any regression.
linux-oem buglink: https://bugs.launchpad.net/ubuntu/+source/linux-oem/+bug/1769658
This bug is for tracking purposes only, please don't triage. |
|
| 2020-02-18 10:14:16 |
Shrirang Bagul |
linux (Ubuntu Bionic): status |
New |
Confirmed |
|
| 2020-02-18 10:14:29 |
Shrirang Bagul |
linux (Ubuntu Bionic): importance |
Undecided |
High |
|
| 2020-02-18 10:18:00 |
Shrirang Bagul |
description |
[SRU Justification]
[Impact]
Dell Edge 300x IoT Gateways have a relative humidity sensor hts221. The sensor stops working (and reports stale values) after the system resumes from suspend-to-ram/suspend-to-disk PM states.
== Fix ==
AV_CONF register (RH & TEMP. oversampling ratio's) and CTRL1 register (ODR & BDU settings) values are lost after suspend.
While the change in AV_CONF updates the sensor resolution modes (overriding the user configuration before the device went to suspend); loss of the contents of the CTRL1 register leads to failure in reading sensor
This patch restores the AV_CONF & CTRL1 registers after
Already submitted upstream for both 4.17.y and 4.14.y (LTS) for review:
4.17.y: https://marc.info/?t=152455871600007&r=1&w=2
4.14.y: https://marc.info/?t=152506242000001&r=1&w=2
However, the issue is only affecting the Dell GW and not ST micro devel. boards.
== Risk of Regression ==
Low.Tthe bug affects only the Dell GW and the patch is being carried in linux-oem (4.15.y) since last 2 years without any regression.
linux-oem buglink: https://bugs.launchpad.net/ubuntu/+source/linux-oem/+bug/1769658
This bug is for tracking purposes only, please don't triage. |
[SRU Justification]
[Impact]
Dell Edge 300x IoT Gateways have a relative humidity sensor hts221. The sensor stops working (and reports stale values) after the system resumes from suspend-to-ram/suspend-to-disk PM states.
== Fix ==
AV_CONF register (RH & TEMP. oversampling ratio's) and CTRL1 register (ODR & BDU settings) values are lost after suspend.
While the change in AV_CONF updates the sensor resolution modes (overriding the user configuration before the device went to suspend); loss of the contents of the CTRL1 register leads to failure in reading sensor
This patch restores the AV_CONF & CTRL1 registers after
Already submitted upstream for both 4.17.y and 4.14.y (LTS) for review:
4.17.y: https://marc.info/?t=152455871600007&r=1&w=2
4.14.y: https://marc.info/?t=152506242000001&r=1&w=2
However, the issue is only affecting the Dell GW and not ST micro devel. boards.
== Risk of Regression ==
Low.Tthe bug affects only the Dell GW and the patch is being carried in linux-oem (4.15.y) since last 2 years without any regression.
linux-oem buglink: https://bugs.launchpad.net/bugs/1769658
This bug is for tracking purposes only, please don't triage. |
|
| 2020-02-18 10:30:06 |
Ubuntu Kernel Bot |
linux (Ubuntu): status |
New |
Incomplete |
|
| 2020-02-18 10:30:09 |
Ubuntu Kernel Bot |
tags |
|
bionic |
|
| 2020-02-18 10:54:34 |
Shrirang Bagul |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2020-02-18 10:54:40 |
Shrirang Bagul |
linux (Ubuntu): importance |
Undecided |
High |
|
| 2020-03-11 04:50:29 |
Khaled El Mously |
linux (Ubuntu Bionic): status |
Confirmed |
Fix Committed |
|
| 2020-03-17 16:13:58 |
Ubuntu Kernel Bot |
tags |
bionic |
bionic verification-needed-bionic |
|
| 2020-04-06 16:52:57 |
Launchpad Janitor |
linux (Ubuntu Bionic): status |
Fix Committed |
Fix Released |
|
| 2020-04-06 16:52:57 |
Launchpad Janitor |
cve linked |
|
2020-8834 |
|
