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authorAlexandre Courbot <acourbot@nvidia.com>2013-02-03 01:29:25 +0900
committerGrant Likely <grant.likely@secretlab.ca>2013-02-09 09:22:21 +0000
commit65493e3ac429623df021e0859d97691f4b42615a (patch)
treea4e4568cde79ce00d80c5c1b6f4f74d59d1c2562 /drivers/gpio
parent1a989d0f1de8f5a150b35e1e8181cc1abc139162 (diff)
downloadvexpress-lsk-65493e3ac429623df021e0859d97691f4b42615a.tar.gz
gpiolib: use gpio_chips list in gpiolib_sysfs_init
Use the small list of GPIO chips instead of parsing the whole GPIO number space. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpiolib.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 453ac77771c..c1d8f7bdcd8 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -974,7 +974,7 @@ static int __init gpiolib_sysfs_init(void)
{
int status;
unsigned long flags;
- unsigned gpio;
+ struct gpio_chip *chip;
status = class_register(&gpio_class);
if (status < 0)
@@ -987,10 +987,7 @@ static int __init gpiolib_sysfs_init(void)
* registered, and so arch_initcall() can always gpio_export().
*/
spin_lock_irqsave(&gpio_lock, flags);
- for (gpio = 0; gpio < ARCH_NR_GPIOS; gpio++) {
- struct gpio_chip *chip;
-
- chip = gpio_desc[gpio].chip;
+ list_for_each_entry(chip, &gpio_chips, list) {
if (!chip || chip->exported)
continue;