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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2009-10-27 18:45:17 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-10-27 18:45:17 -0400 |
| commit | e343eb0d60f74547e0aeb5bd151105c2e6cfe588 (patch) | |
| tree | 92586df0daf3298262a957640e5c86679c963f41 /arch/arm/mach-u300/gpio.c | |
| parent | ddc04fd4d5163aee9ebdb38a56c365b602e2b7b7 (diff) | |
| parent | 012abeea669ea49636cf952d13298bb68654146a (diff) | |
| download | blackbird-op-linux-e343eb0d60f74547e0aeb5bd151105c2e6cfe588.tar.gz blackbird-op-linux-e343eb0d60f74547e0aeb5bd151105c2e6cfe588.zip | |
Merge commit 'v2.6.32-rc5' into for-2.6.33
Diffstat (limited to 'arch/arm/mach-u300/gpio.c')
| -rw-r--r-- | arch/arm/mach-u300/gpio.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/mach-u300/gpio.c b/arch/arm/mach-u300/gpio.c index 63c8f27fb15a..0b35826b7d1d 100644 --- a/arch/arm/mach-u300/gpio.c +++ b/arch/arm/mach-u300/gpio.c @@ -281,6 +281,16 @@ int gpio_unregister_callback(unsigned gpio) } EXPORT_SYMBOL(gpio_unregister_callback); +/* Non-zero means valid */ +int gpio_is_valid(int number) +{ + if (number >= 0 && + number < (U300_GPIO_NUM_PORTS * U300_GPIO_PINS_PER_PORT)) + return 1; + return 0; +} +EXPORT_SYMBOL(gpio_is_valid); + int gpio_request(unsigned gpio, const char *label) { if (gpio_pin[gpio].users) |
