From 3d599d1ca57f443e5c4ff5af1e69d90350082f77 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Wed, 15 Oct 2008 22:03:12 -0700 Subject: gpio_free might sleep, generic part MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 is the generic part which changes gpiolib and the fallback implementation only. Signed-off-by: Uwe Kleine-König Cc: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/gpio/gpiolib.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpio') diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 8d2940517c9..317004fd94f 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -792,6 +792,8 @@ void gpio_free(unsigned gpio) unsigned long flags; struct gpio_desc *desc; + might_sleep(); + if (!gpio_is_valid(gpio)) { WARN_ON(extra_checks); return; -- cgit v1.2.3-70-g09d2