From 65493e3ac429623df021e0859d97691f4b42615a Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Sun, 3 Feb 2013 01:29:25 +0900 Subject: [PATCH] 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 Reviewed-by: Linus Walleij Signed-off-by: Grant Likely --- drivers/gpio/gpiolib.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 453ac77..c1d8f7b 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; -- 2.7.4