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| author | Axel Lin <axel.lin@ingics.com> | 2012-11-21 14:33:56 +0800 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-11-21 10:08:05 +0100 |
| commit | b4d4b1f087b9d4d730eb70f24032395d7cd7e591 (patch) | |
| tree | baca0b7810c3b0966e4f7ba65088a01d77df7b98 | |
| parent | 316511c0134acec8f4ea730bd1897c7a1124a7c1 (diff) | |
| download | blackbird-obmc-linux-b4d4b1f087b9d4d730eb70f24032395d7cd7e591.tar.gz blackbird-obmc-linux-b4d4b1f087b9d4d730eb70f24032395d7cd7e591.zip | |
gpiolib: Fix use after free in gpiochip_add_pin_range
This is introduced by commit 9ab6e988
"gpiolib: return any error code from range creation".
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/gpio/gpiolib.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 26e27c1fecb1..58b9838801c0 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1201,6 +1201,7 @@ int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, unsigned int npins) { struct gpio_pin_range *pin_range; + int ret; pin_range = kzalloc(sizeof(*pin_range), GFP_KERNEL); if (!pin_range) { @@ -1219,10 +1220,11 @@ int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, pin_range->pctldev = pinctrl_find_and_add_gpio_range(pinctl_name, &pin_range->range); if (IS_ERR(pin_range->pctldev)) { + ret = PTR_ERR(pin_range->pctldev); pr_err("%s: GPIO chip: could not create pin range\n", chip->label); kfree(pin_range); - return PTR_ERR(pin_range->pctldev); + return ret; } pr_debug("GPIO chip %s: created GPIO range %d->%d ==> %s PIN %d->%d\n", chip->label, gpio_offset, gpio_offset + npins - 1, |
