Public bug reported:
[Impact]
Add new palm sensor supports to Lenovo Thinkpad systems
[Fix]
thinkpad_acpi is updated to check palm sensor presence and its events
[Test]
Tested on Thinkpad systems
[Where problems could occur]
Low risks. Only thinkpad systems are affected. Also thinkpad systems without
palm sensor and without TP_HKEY_EV_PALM_DETECTED & TP_HKEY_EV_PALM_UNDETECTED
events won't be affected either.
There can an issue as discussed in commit log of "thinkpad_acpi: Add
palm sensor support"
Note: On some platforms, because of an issue in the HW implementation,
the palm sensor presence may be incorrectly advertised as always
enabled even if a palm sensor is not present. The palm sensor is
intended for WWAN transmission power control and should be available
and correct on all WWAN enabled systems. It is not recommended to use
this interface for other use cases.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Description changed:
[Impact]
- Add new palm sensor supports to Lenovo Thinkpad systems
+ Add new palm sensor supports to Lenovo Thinkpad systems
[Fix]
- thinkpad_acpi is updated to check palm sensor presence and its events
+ thinkpad_acpi is updated to check palm sensor presence and its events
[Test]
- Tested on Thinkpad systems
+ Tested on Thinkpad systems
[Where problems could occur]
- Low risks. Only thinkpad systems are affected. Also thinkpad systems
without palm sensor
- and without TP_HKEY_EV_PALM_DETECTED & TP_HKEY_EV_PALM_UNDETECTED events
won't
- be affected either.
-
- There can an issue as discussed in commit log of "thinkpad_acpi: Add palm
sensor support"
-
- Note: On some platforms, because of an issue in the HW implementation,
- the palm sensor presence may be incorrectly advertised as always
- enabled even if a palm sensor is not present. The palm sensor is
- intended for WWAN transmission power control and should be available
- and correct on all WWAN enabled systems. It is not recommended to use
- this interface for other use cases.
+ Low risks. Only thinkpad systems are affected. Also thinkpad systems
without palm sensor and without TP_HKEY_EV_PALM_DETECTED &
TP_HKEY_EV_PALM_UNDETECTED events won't be affected either.
-
- Note: "thinkpad_acpi: Add palm sensor support" was cherry-picked from
mainline, and
- "thinkpad_acpi: correct palmsensor error checking" is cherry-picked from
maintainer's
- tree
(git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git)
+ There can an issue as discussed in commit log of "thinkpad_acpi: Add
+ palm sensor support"
+
+ Note: On some platforms, because of an issue in the HW implementation,
+ the palm sensor presence may be incorrectly advertised as always
+ enabled even if a palm sensor is not present. The palm sensor is
+ intended for WWAN transmission power control and should be available
+ and correct on all WWAN enabled systems. It is not recommended to use
+ this interface for other use cases.
+
+ Note: "thinkpad_acpi: Add palm sensor support" was cherry-picked from
+ mainline, and "thinkpad_acpi: correct palmsensor error checking" is
+ cherry-picked from maintainer's tree
+ (git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-
+ drivers-x86.git)
** Description changed:
[Impact]
Add new palm sensor supports to Lenovo Thinkpad systems
[Fix]
thinkpad_acpi is updated to check palm sensor presence and its events
[Test]
Tested on Thinkpad systems
[Where problems could occur]
Low risks. Only thinkpad systems are affected. Also thinkpad systems
without palm sensor and without TP_HKEY_EV_PALM_DETECTED &
TP_HKEY_EV_PALM_UNDETECTED events won't be affected either.
There can an issue as discussed in commit log of "thinkpad_acpi: Add
palm sensor support"
Note: On some platforms, because of an issue in the HW implementation,
the palm sensor presence may be incorrectly advertised as always
enabled even if a palm sensor is not present. The palm sensor is
intended for WWAN transmission power control and should be available
and correct on all WWAN enabled systems. It is not recommended to use
this interface for other use cases.
-
- Note: "thinkpad_acpi: Add palm sensor support" was cherry-picked from
- mainline, and "thinkpad_acpi: correct palmsensor error checking" is
- cherry-picked from maintainer's tree
- (git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-
- drivers-x86.git)
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https://bugs.launchpad.net/bugs/1912033
Title:
Thinkpad - add palm sensor support needed for WWAN
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