diff options
| author | Wolfram Sang <w.sang@pengutronix.de> | 2011-12-13 18:34:01 +0100 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2012-04-05 21:24:06 -0700 |
| commit | fc3a1f04f5040255cbc086c419e4237f29f89f88 (patch) | |
| tree | 3ece85d636a3ceeffb157b77ee51b4745cbdf2d9 /drivers/gpio/gpiolib.c | |
| parent | dd775ae2549217d3ae09363e3edb305d0fa19928 (diff) | |
| download | linux-fc3a1f04f5040255cbc086c419e4237f29f89f88.tar.bz2 | |
gpio: add flags to export GPIOs when requesting
Introduce new flags to automatically export GPIOs when using the convenience
functions gpio_request_one() or gpio_request_array(). This eases support for
custom boards where lots of GPIOs need to be exported for customer
applications.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 5a75510d66bb..566d0122d832 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1302,8 +1302,18 @@ int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) (flags & GPIOF_INIT_HIGH) ? 1 : 0); if (err) - gpio_free(gpio); + goto free_gpio; + + if (flags & GPIOF_EXPORT) { + err = gpio_export(gpio, flags & GPIOF_EXPORT_CHANGEABLE); + if (err) + goto free_gpio; + } + + return 0; + free_gpio: + gpio_free(gpio); return err; } EXPORT_SYMBOL_GPL(gpio_request_one); |