linux-kernel - Re: [PATCH] [v3] usb: musb: Fix runtime PM imbalance on error

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Message-ID: <20200522153701.GD25575@iaqt7>
Date:   Fri, 22 May 2020 10:37:01 -0500
From:   Bin Liu <b-liu@...com>
To:     Dinghao Liu <dinghao.liu@....edu.cn>
CC:     <kjlu@....edu>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] [v3] usb: musb: Fix runtime PM imbalance on error

On Fri, May 22, 2020 at 01:42:35PM +0800, Dinghao Liu wrote:
> When copy_from_user() returns an error code, there
> is a runtime PM usage counter imbalance.
> 
> Fix this by moving copy_from_user() to the beginning
> of this function.
> 
> Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
> ---
> 
> Changelog:
> 
> v2: - Move copy_from_user() to the beginning rather
>       than adding pm_runtime_put_autosuspend().
> 
> v3: - Add missing changelog information.

Queued for v5.8. Thanks.
-Bin.