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gpio: gpiolib: don't compare an unsigned for >= 0

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The parameter offset is an unsigned, so it makes no sense to compare
it for >= 0. Fix the compiler warning regarding this by removing this
comparison.

As the macro GPIO_OFFSET_VALID is only used at this single place, simplify
the code by dropping the macro completely and dropping the invert, too.

No functional change.

Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Dirk Behme 2015-08-18 18:02:32 +02:00 committed by Linus Walleij
parent 633a506593
commit 48b5953ed8
1 changed files with 1 additions and 3 deletions
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4
drivers/gpio/gpiolib.c
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@ -47,8 +47,6 @@
*/
DEFINE_SPINLOCK(gpio_lock);
#define GPIO_OFFSET_VALID(chip, offset) (offset >= 0 && offset < chip->ngpio)
static DEFINE_MUTEX(gpio_lookup_lock);
static LIST_HEAD(gpio_lookup_list);
LIST_HEAD(gpio_chips);
@ -995,7 +993,7 @@ const char *gpiochip_is_requested(struct gpio_chip *chip, unsigned offset)
{
struct gpio_desc *desc;
if (!GPIO_OFFSET_VALID(chip, offset))
if (offset >= chip->ngpio)
return NULL;
desc = &chip->desc[offset];