diff options
| author | Uwe Kleine-Koenig <ukleinek@strlen.de> | 2009-02-04 17:02:30 +0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2009-02-04 17:02:30 +0800 |
| commit | 45c4f2a0b6c6302c5617534b8189c0e9b5a4a048 (patch) | |
| tree | 13f7088078cfedb735354df7aed9a6720e3302bf | |
| parent | 2f95d5bd84bfbe8cf62cb1c4306354cfc139370b (diff) | |
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>
| -rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index 0c4fc31029c..05bf85ba744 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -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)))) { |