linux-kernel - [PATCH v1 0/1] i2c: Restore power status of device if probe fails

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Date:   Wed, 09 Nov 2022 15:29:47 +0100
From:   Ricardo Ribalda <ribalda@...omium.org>
To:     Tomasz Figa <tfiga@...omium.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Wolfram Sang <wsa@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Ricardo Ribalda <ribalda@...omium.org>,
        Hidenori Kobayashi <hidenorik@...gle.com>,
        linux-i2c@...r.kernel.org
Subject: [PATCH v1 0/1] i2c: Restore power status of device if probe fails

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: Wolfram Sang <wsa@...nel.org>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Tomasz Figa <tfiga@...omium.org>
To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc: Hidenori Kobayashi <hidenorik@...gle.com>
Cc: linux-i2c@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

---
Ricardo Ribalda (1):
      i2c: Restore initial power state on probe failure

 drivers/i2c/i2c-core-base.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
base-commit: f141df371335645ce29a87d9683a3f79fba7fd67
change-id: 20221109-i2c-waive-ae97fea1f1b5

Best regards,
-- 
Ricardo Ribalda <ribalda@...omium.org>