From: Navid Emamdoost <navid.emamdoost@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
patches@opensource.cirrus.com, linux-gpio@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: emamd001@umn.edu, wu000273@umn.edu, kjlu@umn.edu,
smccaman@umn.edu, Navid Emamdoost <navid.emamdoost@gmail.com>
Subject: [PATCH] gpio: arizona: handle pm_runtime_get_sync failure case
Date: Thu, 4 Jun 2020 21:52:07 -0500 [thread overview]
Message-ID: <20200605025207.65719-1-navid.emamdoost@gmail.com> (raw)
Calling pm_runtime_get_sync increments the counter even in case of
failure, causing incorrect ref count. Call pm_runtime_put if
pm_runtime_get_sync fails.
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
---
drivers/gpio/gpio-arizona.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpio/gpio-arizona.c b/drivers/gpio/gpio-arizona.c
index 5640efe5e750..7520a13b4c7c 100644
--- a/drivers/gpio/gpio-arizona.c
+++ b/drivers/gpio/gpio-arizona.c
@@ -106,6 +106,7 @@ static int arizona_gpio_direction_out(struct gpio_chip *chip,
ret = pm_runtime_get_sync(chip->parent);
if (ret < 0) {
dev_err(chip->parent, "Failed to resume: %d\n", ret);
+ pm_runtime_put(chip->parent);
return ret;
}
}
--
2.17.1
next reply other threads:[~2020-06-05 2:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-05 2:52 Navid Emamdoost [this message]
2020-06-05 10:55 ` [PATCH] gpio: arizona: handle pm_runtime_get_sync failure case Charles Keepax
2020-06-10 9:18 ` Linus Walleij
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