* [PATCH] gpio: arizona: handle pm_runtime_get_sync failure case
@ 2020-06-05 2:52 Navid Emamdoost
2020-06-05 10:55 ` Charles Keepax
2020-06-10 9:18 ` Linus Walleij
0 siblings, 2 replies; 3+ messages in thread
From: Navid Emamdoost @ 2020-06-05 2:52 UTC (permalink / raw)
To: Linus Walleij, Bartosz Golaszewski, patches, linux-gpio, linux-kernel
Cc: emamd001, wu000273, kjlu, smccaman, Navid Emamdoost
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
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] gpio: arizona: handle pm_runtime_get_sync failure case
2020-06-05 2:52 [PATCH] gpio: arizona: handle pm_runtime_get_sync failure case Navid Emamdoost
@ 2020-06-05 10:55 ` Charles Keepax
2020-06-10 9:18 ` Linus Walleij
1 sibling, 0 replies; 3+ messages in thread
From: Charles Keepax @ 2020-06-05 10:55 UTC (permalink / raw)
To: Navid Emamdoost
Cc: Linus Walleij, Bartosz Golaszewski, patches, linux-gpio,
linux-kernel, emamd001, wu000273, kjlu, smccaman
On Thu, Jun 04, 2020 at 09:52:07PM -0500, Navid Emamdoost wrote:
> 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>
> ---
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Thanks,
Charles
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] gpio: arizona: handle pm_runtime_get_sync failure case
2020-06-05 2:52 [PATCH] gpio: arizona: handle pm_runtime_get_sync failure case Navid Emamdoost
2020-06-05 10:55 ` Charles Keepax
@ 2020-06-10 9:18 ` Linus Walleij
1 sibling, 0 replies; 3+ messages in thread
From: Linus Walleij @ 2020-06-10 9:18 UTC (permalink / raw)
To: Navid Emamdoost
Cc: Bartosz Golaszewski, patches, open list:GPIO SUBSYSTEM,
linux-kernel, Navid Emamdoost, wu000273, Kangjie Lu, smccaman
On Fri, Jun 5, 2020 at 4:52 AM Navid Emamdoost
<navid.emamdoost@gmail.com> wrote:
> 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>
Patch applied for fixes.
Yours,
Linus Walleij
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-06-10 9:18 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2020-06-05 2:52 [PATCH] gpio: arizona: handle pm_runtime_get_sync failure case Navid Emamdoost
2020-06-05 10:55 ` Charles Keepax
2020-06-10 9:18 ` Linus Walleij
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