diff options
| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2010-06-08 07:48:15 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-07-05 16:14:29 -0600 |
| commit | cedb1881ba32f7e9cd49250bd79debccbe52b094 (patch) | |
| tree | eefcda635b7b5f683a473c965f8cbeeaff38d6b5 | |
| parent | ac80a51e2ce5c431de9997085f33cb6093218b1f (diff) | |
| download | lwn-cedb1881ba32f7e9cd49250bd79debccbe52b094.tar.gz lwn-cedb1881ba32f7e9cd49250bd79debccbe52b094.zip | |
gpiolib: cosmetic improvements for error handling in gpiochip_add()
Hopefully it makes the code look nicer and makes it easier to extend
this function.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
CC: devicetree-discuss@lists.ozlabs.org
CC: linux-kernel@vger.kernel.org
| -rw-r--r-- | drivers/gpio/gpiolib.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 3ca36542e338..713ca0e37f23 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1101,14 +1101,20 @@ int gpiochip_add(struct gpio_chip *chip) unlock: spin_unlock_irqrestore(&gpio_lock, flags); - if (status == 0) - status = gpiochip_export(chip); + + if (status) + goto fail; + + status = gpiochip_export(chip); + if (status) + goto fail; + + return 0; fail: /* failures here can mean systems won't boot... */ - if (status) - pr_err("gpiochip_add: gpios %d..%d (%s) failed to register\n", - chip->base, chip->base + chip->ngpio - 1, - chip->label ? : "generic"); + pr_err("gpiochip_add: gpios %d..%d (%s) failed to register\n", + chip->base, chip->base + chip->ngpio - 1, + chip->label ? : "generic"); return status; } EXPORT_SYMBOL_GPL(gpiochip_add); |