A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 11:11:45 -04:00
Code Issues Projects Releases Packages Wiki Activity

gpio: fix gpio leak in gpiochip_add error path

Browse source 
Make sure to free any hogged gpios on errors in gpiochip_add.

Also move all forward declarations to the top of the file.

Fixes: f625d46017 ("gpio: add GPIO hogging mechanism")
Signed-off-by: Johan Hovold <[email protected]>
Reviewed-by: Alexandre Courbot <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Johan Hovold 2015-05-04 17:23:25 +02:00 • committed by Linus Walleij
commit 6d86750ce6
1 changed files with 6 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

10
drivers/gpio/gpiolib.c
View file

@ -53,6 +53,11 @@ static DEFINE_MUTEX(gpio_lookup_lock);
static LIST_HEAD(gpio_lookup_list);
LIST_HEAD(gpio_chips);
static void gpiochip_free_hogs(struct gpio_chip *chip);
static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip);
static inline void desc_set_label(struct gpio_desc *d, const char *label)
{
d->label = label;
@ -297,6 +302,7 @@ int gpiochip_add(struct gpio_chip *chip)
err_remove_chip:
acpi_gpiochip_remove(chip);
gpiochip_free_hogs(chip);
of_gpiochip_remove(chip);
spin_lock_irqsave(&gpio_lock, flags);
list_del(&chip->list);
@ -313,10 +319,6 @@ err_free_descs:
}
EXPORT_SYMBOL_GPL(gpiochip_add);
/* Forward-declaration */
static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip);
static void gpiochip_free_hogs(struct gpio_chip *chip);
/**
* gpiochip_remove() - unregister a gpio_chip
* @chip: the chip to unregister