Commit 45c4f2a0 authored Feb 04, 2009 by Uwe Kleine-Koenig Committed by Bryan Wu Feb 04, 2009

Blackfin arch: explicit add a might sleep to gpio_free



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 blackfin
architecture.

Signed-off-by: Uwe Kleine-Koenig <ukleinek@strlen.de>
Cc: David Brownell <david-b@pacbell.net>
Acked-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

parent 2f95d5bd

arch/blackfin/kernel/bfin_gpio.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1081,6 +1081,8 @@ void bfin_gpio_free(unsigned gpio)
		if (check_gpio(gpio) < 0)
		return;

		might_sleep();

		local_irq_save_hw(flags);

		if (unlikely(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {