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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 <[email protected]>
Cc: David Brownell <[email protected]>
Acked-by: Bryan Wu <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
This commit is contained in:
Uwe Kleine-Koenig 2009-02-04 17:02:30 +08:00 • committed by Bryan Wu
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)))) {