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authorJoe Perches <joe@perches.com>2011-05-10 16:23:07 -0700
committerGrant Likely <grant.likely@secretlab.ca>2011-05-26 21:02:43 -0600
commit3474cb3cc0140f9cf6ca56983f8180b4b4c5c36a (patch)
tree73abf5a283fb330ef15c7cb8e9d0cc264f03ab5f /include/asm-generic
parent82ab0f75ee2f5defe300eadc91635aa455e01afd (diff)
downloadop-kernel-dev-3474cb3cc0140f9cf6ca56983f8180b4b4c5c36a.zip
op-kernel-dev-3474cb3cc0140f9cf6ca56983f8180b4b4c5c36a.tar.gz
gpio: Convert gpio_is_valid to return bool
Make the code a bit more readable. Instead of casting an int to an unsigned then comparing to MAX_NR_GPIOS, add a >= 0 test and let the compiler optimizer do the conversion to unsigned. The generated code should be the same. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/gpio.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index ff5c660..a98b52c 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -35,9 +35,9 @@
* platform data and other tables.
*/
-static inline int gpio_is_valid(int number)
+static inline bool gpio_is_valid(int number)
{
- return ((unsigned)number) < ARCH_NR_GPIOS;
+ return number >= 0 && number < ARCH_NR_GPIOS;
}
struct device;
@@ -212,7 +212,7 @@ extern void gpio_unexport(unsigned gpio);
#else /* !CONFIG_GPIOLIB */
-static inline int gpio_is_valid(int number)
+static inline bool gpio_is_valid(int number)
{
/* only non-negative numbers are valid */
return number >= 0;
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