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Blackfin arch: explicit add a might sleep to gpio_free

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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>
This commit is contained in:
Uwe Kleine-Koenig 2009-02-04 17:02:30 +08:00 committed by Bryan Wu
parent 2f95d5bd84
commit 45c4f2a0b6
1 changed files with 2 additions and 0 deletions
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2
arch/blackfin/kernel/bfin_gpio.c
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@ -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)))) {