diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/gpio.txt | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/gpio.txt b/Documentation/gpio.txt index a492d92bb09..792faa3c06c 100644 --- a/Documentation/gpio.txt +++ b/Documentation/gpio.txt | |||
| @@ -135,7 +135,7 @@ setting up a platform_device using the GPIO, is mark its direction: | |||
| 135 | int gpio_direction_input(unsigned gpio); | 135 | int gpio_direction_input(unsigned gpio); |
| 136 | int gpio_direction_output(unsigned gpio, int value); | 136 | int gpio_direction_output(unsigned gpio, int value); |
| 137 | 137 | ||
| 138 | The return value is zero for success, else a negative errno. It must | 138 | The return value is zero for success, else a negative errno. It should |
| 139 | be checked, since the get/set calls don't have error returns and since | 139 | be checked, since the get/set calls don't have error returns and since |
| 140 | misconfiguration is possible. You should normally issue these calls from | 140 | misconfiguration is possible. You should normally issue these calls from |
| 141 | a task context. However, for spinlock-safe GPIOs it's OK to use them | 141 | a task context. However, for spinlock-safe GPIOs it's OK to use them |