linux-kernel - Re: [PATCH] HID: i2c-hid: add mutex protecting open/close race

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Date:	Wed, 12 Dec 2012 17:34:44 +0100
From:	Jean Delvare <khali@...ux-fr.org>
To:	Benjamin Tissoires <benjamin.tissoires@...il.com>
Cc:	Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] HID: i2c-hid: add mutex protecting open/close race

Hi Benjamin,

On Wed, 12 Dec 2012 17:12:16 +0100, Benjamin Tissoires wrote:
> We should not enter close function while someone else is in open.
> This mutex prevents this race.
> 
> There is also no need to override the ret value with -EIO in case of
> a failure of i2c_hid_set_power.
> 
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...il.com>
> ---

Looks good to me except that you forgot to include <linux/mutex.h> and
this could cause build failures on some architectures/configs.

Once this is fixed, you can add:

Reviewed-by: Jean Delvare <khali@...ux-fr.org>

-- 
Jean Delvare
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