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authorUwe Kleine-König <ukleinek@informatik.uni-freiburg.de>2008-10-29 14:14:54 -0700
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-10-30 14:41:50 +0000
commit9c6568501cbf731a910db2fcb7d094977dcb154c (patch)
treedda2ce4a1a7cd65134328fe4f199bff810ab4ba6 /arch/arm/mach-orion5x/gpio.c
parent63890a0ee1af994122094bd01f87ea6251631a3f (diff)
downloadlinux-linaro-stable-9c6568501cbf731a910db2fcb7d094977dcb154c.tar.gz
[ARM] gpio_free might sleep, arm architecture
According to the documentation gpio_free should only be called from task context only. To make this more explicit add a might sleep to all implementations. This patch changes the gpio_free implementations for the arm architecture. DaVinci is skipped on purpose to simplify the merge process for patches switching it over to use gpiolib as per request by David Brownell. Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de> Cc: David Brownell <david-b@pacbell.net> Cc: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-orion5x/gpio.c')
-rw-r--r--arch/arm/mach-orion5x/gpio.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-orion5x/gpio.c b/arch/arm/mach-orion5x/gpio.c
index fc419868e39f..f99d08811e5a 100644
--- a/arch/arm/mach-orion5x/gpio.c
+++ b/arch/arm/mach-orion5x/gpio.c
@@ -165,6 +165,8 @@ EXPORT_SYMBOL(gpio_request);
void gpio_free(unsigned pin)
{
+ might_sleep();
+
if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) {
pr_debug("%s: invalid GPIO %d\n", __func__, pin);
return;