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From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: Bartosz Golaszewski <brgl@bgdev.pl>,
	Linus Walleij <linus.walleij@linaro.org>,
	Khouloud Touil <ktouil@baylibre.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: Re: [PATCH v4 2/4] gpiolib: use kref in gpio_desc
Date: Thu, 20 Feb 2020 12:05:48 +0000	[thread overview]
Message-ID: <5970b17a-b29b-154f-033e-6da007d6a289@linaro.org> (raw)
In-Reply-To: <20200220100141.5905-3-brgl@bgdev.pl>



On 20/02/2020 10:01, Bartosz Golaszewski wrote:
> --- a/drivers/gpio/gpiolib.c
> +++ b/drivers/gpio/gpiolib.c
> @@ -2798,6 +2798,8 @@ static int gpiod_request_commit(struct gpio_desc *desc, const char *label)
>   		goto done;
>   	}
>   
> +	kref_init(&desc->ref);
> +

Should we not decrement refcount on the error path of this function?

--srini

>   	if (chip->request) {
>   		/* chip->request may sleep */
>   		spin_unlock_irqrestore(&gpio_lock, flags);
> @@ -2933,6 +2935,13 @@ void gpiod_free(struct gpio_desc *desc)
>   	}
>   }

  reply	other threads:[~2020-02-20 12:05 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-20 10:01 [PATCH v4 0/4] nvmem/gpio: fix resource management Bartosz Golaszewski
2020-02-20 10:01 ` [PATCH v4 1/4] nvmem: fix memory leak in error path Bartosz Golaszewski
2020-02-20 11:30   ` Srinivas Kandagatla
2020-02-20 12:45     ` Bartosz Golaszewski
2020-02-20 10:01 ` [PATCH v4 2/4] gpiolib: use kref in gpio_desc Bartosz Golaszewski
2020-02-20 12:05   ` Srinivas Kandagatla [this message]
2020-02-20 12:51     ` Bartosz Golaszewski
2020-02-20 10:01 ` [PATCH v4 3/4] nvmem: increase the reference count of a gpio passed over config Bartosz Golaszewski
2020-02-22 11:54   ` kbuild test robot
2020-02-22 11:54     ` kbuild test robot
2020-02-23 20:22     ` Bartosz Golaszewski
2020-02-23 20:22       ` Bartosz Golaszewski
2020-02-20 10:01 ` [PATCH v4 4/4] nvmem: release the write-protect pin Bartosz Golaszewski

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