diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-06-14 19:07:05 +0900 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-06-23 11:07:11 +0200 |
| commit | 1020dfd15b2363bf652851c490a27a550070346e (patch) | |
| tree | b88e6f4fc70825e95c495318f7767f79710ae1d3 /drivers/gpio | |
| parent | be715343011b80a8da71ff978b50981984f037b9 (diff) | |
| download | linux-1020dfd15b2363bf652851c490a27a550070346e.tar.bz2 | |
gpio: of: move chip->of_gpio_n_cells checking to of_gpiochip_add()
Do this sanity check only once when the gpio_chip is added
rather than every time gpio-hog is handled.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpiolib-of.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 37a3221d67dc..a68e42dcce0a 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -155,7 +155,7 @@ static struct gpio_desc *of_parse_own_gpio(struct device_node *np, if (ret) return ERR_PTR(ret); - if (tmp > MAX_PHANDLE_ARGS || tmp != chip->of_gpio_n_cells) + if (tmp != chip->of_gpio_n_cells) return ERR_PTR(-EINVAL); gpiospec.np = chip_np; @@ -486,6 +486,9 @@ int of_gpiochip_add(struct gpio_chip *chip) chip->of_xlate = of_gpio_simple_xlate; } + if (chip->of_gpio_n_cells > MAX_PHANDLE_ARGS) + return -EINVAL; + status = of_gpiochip_add_pin_range(chip); if (status) return status; |