linux-kernel - Re: [PATCH] leds: gpio: Fix device teardown on probe deferral

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Message-id: <552E2B53.8030002@samsung.com>
Date:	Wed, 15 Apr 2015 11:11:47 +0200
From:	Jacek Anaszewski <j.anaszewski@...sung.com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Bryan Wu <cooloney@...il.com>, Richard Purdie <rpurdie@...ys.net>,
	linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] leds: gpio: Fix device teardown on probe deferral

Hi Sebastian,

On 04/14/2015 11:23 PM, Sebastian Hesselbarth wrote:
> In gpio_leds_create(), when devm_get_gpiod_from_child() fails with
> -EPROBE_DEFER on the second gpio led to be created, the first already
> registered led is not torn down properly. This causes create_gpio_led()
> to fail for the first led on re-probe().
>
> Fix this misbehaviour by incrementing num_leds only if all
> potentially failing calls completed successfully.
>
> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
> ---
> Cc: Bryan Wu <cooloney@...il.com>
> Cc: Richard Purdie <rpurdie@...ys.net>
> Cc: linux-leds@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> ---
>   drivers/leds/leds-gpio.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)

For this patch:

Acked-by: Jacek Anaszewski <j.anaszewski@...sung.com>

I have a question regarding the sequence above on line 201:

if (!led.name)
	return ERR_PTR(-EINVAL);

Shouldn't this be also 'goto err"?

-- 
Best Regards,
Jacek Anaszewski
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