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authorDavid Brownell <dbrownell@users.sourceforge.net>2010-08-10 18:02:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-11 08:59:08 -0700
commit9c4ba9466117b16a2b85034bb87db528aaeb3f07 (patch)
tree24ca585f76deef20b8c541ec2b62a1c72776a931 /drivers/gpio
parent49946f68149a723659eca253376ac555d4b73280 (diff)
downloadop-kernel-dev-9c4ba9466117b16a2b85034bb87db528aaeb3f07.zip
op-kernel-dev-9c4ba9466117b16a2b85034bb87db528aaeb3f07.tar.gz
gpiolib: decouple might_sleep_if() from DEBUG
Be more consistent about runtime programming interface abuse warnings, which can reduce some confusion and trigger bugfixes. Based on an observation and patch from Jani Nikula. Also update doc to highlight some sleeping-call issues and to match some recent changes. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Jani Nikula <ext-jani.1.nikula@nokia.com> Cc: "Ryan Mallon" <ryan@bluewatersys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpiolib.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 6a6bd56..1a8c18c 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1272,7 +1272,7 @@ void gpio_free(unsigned gpio)
if (chip && test_bit(FLAG_REQUESTED, &desc->flags)) {
if (chip->free) {
spin_unlock_irqrestore(&gpio_lock, flags);
- might_sleep_if(extra_checks && chip->can_sleep);
+ might_sleep_if(chip->can_sleep);
chip->free(chip, gpio - chip->base);
spin_lock_irqsave(&gpio_lock, flags);
}
@@ -1410,7 +1410,7 @@ int gpio_direction_input(unsigned gpio)
spin_unlock_irqrestore(&gpio_lock, flags);
- might_sleep_if(extra_checks && chip->can_sleep);
+ might_sleep_if(chip->can_sleep);
if (status) {
status = chip->request(chip, gpio);
@@ -1463,7 +1463,7 @@ int gpio_direction_output(unsigned gpio, int value)
spin_unlock_irqrestore(&gpio_lock, flags);
- might_sleep_if(extra_checks && chip->can_sleep);
+ might_sleep_if(chip->can_sleep);
if (status) {
status = chip->request(chip, gpio);
@@ -1521,7 +1521,7 @@ int gpio_set_debounce(unsigned gpio, unsigned debounce)
spin_unlock_irqrestore(&gpio_lock, flags);
- might_sleep_if(extra_checks && chip->can_sleep);
+ might_sleep_if(chip->can_sleep);
return chip->set_debounce(chip, gpio, debounce);
@@ -1571,7 +1571,7 @@ int __gpio_get_value(unsigned gpio)
struct gpio_chip *chip;
chip = gpio_to_chip(gpio);
- WARN_ON(extra_checks && chip->can_sleep);
+ WARN_ON(chip->can_sleep);
return chip->get ? chip->get(chip, gpio - chip->base) : 0;
}
EXPORT_SYMBOL_GPL(__gpio_get_value);
@@ -1590,7 +1590,7 @@ void __gpio_set_value(unsigned gpio, int value)
struct gpio_chip *chip;
chip = gpio_to_chip(gpio);
- WARN_ON(extra_checks && chip->can_sleep);
+ WARN_ON(chip->can_sleep);
chip->set(chip, gpio - chip->base, value);
}
EXPORT_SYMBOL_GPL(__gpio_set_value);
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