Patch "gpio: unregister gpiochip device before removing it" has been added to the 3.10-stable tree

gregkh
2015-05-15T16:56:02Z

This is a note to let you know that I've just added the patch titled

gpio: unregister gpiochip device before removing it

to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
gpio-unregister-gpiochip-device-before-removing-it.patch
and it can be found in the queue-3.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.

>From 01cca93a9491ed95992523ff7e79dd9bfcdea8e0 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Mon, 12 Jan 2015 17:12:29 +0100
Subject: gpio: unregister gpiochip device before removing it

From: Johan Hovold <johan@kernel.org>

commit 01cca93a9491ed95992523ff7e79dd9bfcdea8e0 upstream.

Unregister gpiochip device (used to export information through sysfs)
before removing it internally. This way removal will reverse addition.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpio/gpiolib.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1265,6 +1265,8 @@ int gpiochip_remove(struct gpio_chip *ch
int status = 0;
unsigned id;

+ gpiochip_unexport(chip);
+
spin_lock_irqsave(&gpio_lock, flags);

gpiochip_remove_pin_ranges(chip);
@@ -1285,9 +1287,6 @@ int gpiochip_remove(struct gpio_chip *ch

spin_unlock_irqrestore(&gpio_lock, flags);

- if (status == 0)
- gpiochip_unexport(chip);
-
return status;
}
EXPORT_SYMBOL_GPL(gpiochip_remove);

Patches currently in stable-queue which might be from johan@kernel.org are

queue-3.10/gpio-unregister-gpiochip-device-before-removing-it.patch
queue-3.10/gpio-sysfs-fix-memory-leaks-and-device-hotplug.patch