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 3.14-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-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 01cca93a9491ed95992523ff7e79dd9bfcdea8e0 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Mon, 12 Jan 2015 17:12:29 +0100
Subject: gpio: unregister gpiochip device before removing it
From: Johan Hovold <johan@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);
@@ -1286,9 +1288,6 @@ 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@xxxxxxxxxx are
queue-3.14/gpio-unregister-gpiochip-device-before-removing-it.patch
queue-3.14/gpio-sysfs-fix-memory-leaks-and-device-hotplug.patch
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