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From: sashiko-bot@kernel.org
To: "Kean Ren" <rh_king@163.com>
Cc: linux-hwmon@vger.kernel.org
Subject: Re: [PATCH v3 1/2] hwmon: (lenovo-ec-sensors): Convert to devm_request_region()
Date: Thu, 21 May 2026 04:19:11 +0000	[thread overview]
Message-ID: <20260521041912.3AE091F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260521035228.533317-2-rh_king@163.com>

> Replace manual request_region()/release_region() with
> devm_request_region().  This lets the device-managed framework
> handle I/O region lifetime automatically and fixes:
> 
> - A double release_region() when probe fails after acquiring the
>   I/O region: the probe error path releases it, and then
>   lenovo_ec_init() releases it again on the same error path.
> 
> - A release-after-use window in lenovo_ec_exit() where
>   release_region() was called before platform_device_unregister(),
>   leaving the hwmon device active with a released I/O region.
> 
> - Missing release_region() in lenovo_ec_probe() if
>   devm_hwmon_device_register_with_info() fails.
> 
> Remove all four manual release_region() calls that are now handled
> automatically and replace request_region with
> devm_request_region, use dev_err replace pr_err.
> 
> Also remove the now-unnecessary braces around the single-statement
> if body.
> 
> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
> Signed-off-by: Kean Ren <rh_king@163.com>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260521035228.533317-1-rh_king@163.com?part=1


  reply	other threads:[~2026-05-21  4:19 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-14  1:14 [PATCH 0/3] hwmon: lenovo-ec-sensors: Probe error handling fixes Kean
2026-05-14  1:14 ` [PATCH 1/3] hwmon: lenovo-ec-sensors: Fix EC signature check logic in probe Kean
2026-05-14  1:37   ` Guenter Roeck
2026-05-14  2:40     ` Mark Pearson
2026-05-14  1:14 ` [PATCH 2/3] hwmon: lenovo-ec-sensors: Fix NULL pointer dereference when DMI match fails Kean
2026-05-14  1:29   ` Guenter Roeck
2026-05-14  3:25   ` Guenter Roeck
2026-05-15  8:10     ` Kean
2026-05-15  8:48       ` Guenter Roeck
2026-05-15  8:30     ` Kean
2026-05-14 11:57   ` sashiko-bot
2026-05-14  1:14 ` [PATCH 3/3] hwmon: lenovo-ec-sensors: Use devm_request_region for automatic cleanup Kean
2026-05-14  1:36   ` Guenter Roeck
2026-05-14  2:39     ` Mark Pearson
2026-05-14  3:24       ` Guenter Roeck
2026-05-14 12:19   ` sashiko-bot
2026-05-20  2:29 ` [PATCH v2 0/2] hwmon: (lenovo-ec-sensors): Fix EC signature validation and I/O resource management Kean Ren
2026-05-20  2:29   ` [PATCH v2 1/2] hwmon: (lenovo-ec-sensors): Convert to devm_request_region() Kean Ren
2026-05-20  2:51     ` sashiko-bot
2026-05-20  5:03       ` Guenter Roeck
2026-05-20  5:52         ` [PATCH 2/3] hwmon: lenovo-ec-sensors: Fix NULL pointer dereference when DMI match fails Kean Ren
2026-05-20 13:11           ` Guenter Roeck
2026-05-20  2:32 ` [PATCH v2 2/2] hwmon: (lenovo-ec-sensors): Fix EC "MCHP" signature validation logic Kean Ren
2026-05-20  3:09   ` sashiko-bot
2026-05-21  3:52 ` [PATCH v3 0/2] hwmon: (lenovo-ec-sensors): Fix EC signature validation and I/O resource management Kean Ren
2026-05-21  3:52   ` [PATCH v3 1/2] hwmon: (lenovo-ec-sensors): Convert to devm_request_region() Kean Ren
2026-05-21  4:19     ` sashiko-bot [this message]
2026-05-21 13:45     ` Guenter Roeck
2026-05-21  3:52   ` [PATCH v3 2/2] hwmon: (lenovo-ec-sensors): Fix EC "MCHP" signature validation logic Kean Ren
2026-05-21  4:45     ` sashiko-bot
2026-05-21 13:46     ` Guenter Roeck
2026-05-22  1:33       ` 任海 

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