We have discovered that some power lines were always on even if the devices
on that power line was not used.
This happens because we failed to probe a device on the i2c bus, and the
ACPI Power Resource were never turned off.
This patch tries to fix this issue.
To: Mika Westerberg <[email protected]>
To: Wolfram Sang <[email protected]>
To: Sakari Ailus <[email protected]>
To: Tomasz Figa <[email protected]>
To: "Rafael J. Wysocki" <[email protected]>
Cc: Hidenori Kobayashi <[email protected]>
Cc: Sergey Senozhatsky <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Ricardo Ribalda <[email protected]>
---
Changes in v6:
- Add Reviewed-by: Hidenori (Thanks!).
- Set device always off at remove.
- Link to v5: https://lore.kernel.org/r/[email protected]
Changes in v5:
- Add Cc: stable
- Add Reviewed-by Sakary (Thanks!).
- Renamed turn-off as power-off, in the name of consistency (Thanks Sergey!)
- Link to v4: https://lore.kernel.org/r/[email protected]
Changes in v4:
- Rename full_power to do_power_on.
- Link to v3: https://lore.kernel.org/r/[email protected]
Changes in v3:
- Introduce full_power variable to make more clear what we are doing.
- Link to v2: https://lore.kernel.org/r/[email protected]
Changes in v2:
- Cover also device remove
- Link to v1: https://lore.kernel.org/r/[email protected]
---
Ricardo Ribalda (1):
i2c: Restore initial power state if probe fails
drivers/i2c/i2c-core-base.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
---
base-commit: f141df371335645ce29a87d9683a3f79fba7fd67
change-id: 20221109-i2c-waive-ae97fea1f1b5
Best regards,
--
Ricardo Ribalda <[email protected]>