linux-kernel - Re: [PATCH 1/2 v6] HID: gt683r: fix race condition

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Message-ID: <CAK5ve-+gmOEAKjSnKaWz2K_xs6LzDUP6LN2Y33J-22UV=eFM2Q@mail.gmail.com>
Date:	Thu, 3 Jul 2014 11:13:09 -0700
From:	Bryan Wu <cooloney@...il.com>
To:	Johan Hovold <johan@...nel.org>
Cc:	Janne Kanniainen <janne.kanniainen@...il.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Greg Kroah-Hartman <greg@...ah.com>,
	Bjørn Mork <bjorn@...k.no>,
	lkml <linux-kernel@...r.kernel.org>,
	Linux LED Subsystem <linux-leds@...r.kernel.org>,
	linux-usb@...r.kernel.org,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>
Subject: Re: [PATCH 1/2 v6] HID: gt683r: fix race condition

On Thu, Jul 3, 2014 at 10:34 AM, Johan Hovold <johan@...nel.org> wrote:
> On Thu, Jul 03, 2014 at 08:17:08PM +0300, Janne Kanniainen wrote:
>> This will fix race condition noticed by Oliver Neukum. Sysfs files are
>> created before mutex and work are initialized.
>>
>> Signed-off-by: Janne Kanniainen <janne.kanniainen@...il.com>
>
> Reviewed-by: Johan Hovold <johan@...nel.org>
>

Good, merged to my tree.
-Bryan

>> ---
>>  drivers/hid/hid-gt683r.c | 6 +++---
>>  1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/hid/hid-gt683r.c b/drivers/hid/hid-gt683r.c
>> index 077f7a1..073bd80 100644
>> --- a/drivers/hid/hid-gt683r.c
>> +++ b/drivers/hid/hid-gt683r.c
>> @@ -227,6 +227,9 @@ static int gt683r_led_probe(struct hid_device *hdev,
>>       if (!led)
>>               return -ENOMEM;
>>
>> +     mutex_init(&led->lock);
>> +     INIT_WORK(&led->work, gt683r_led_work);
>> +
>>       led->mode = GT683R_LED_NORMAL;
>>       led->hdev = hdev;
>>       hid_set_drvdata(hdev, led);
>> @@ -271,9 +274,6 @@ static int gt683r_led_probe(struct hid_device *hdev,
>>               goto fail;
>>       }
>>
>> -     mutex_init(&led->lock);
>> -     INIT_WORK(&led->work, gt683r_led_work);
>> -
>>       return 0;
>>
>>  fail:
--
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