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gpio: pcf857x: change to devm_request_threaded_irq

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Remove the request_irq and use devm_request_threaded_irq
also cleanup free_irq. devm_* takes care of that.

Signed-off-by: George Cherian <george.cherian@ti.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
George Cherian 2013-09-04 12:33:01 +05:30 committed by Linus Walleij
parent 272b98c645
commit 5c21d00871
1 changed files with 24 additions and 4 deletions
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28
drivers/gpio/gpio-pcf857x.c
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@ -168,6 +168,25 @@ static int pcf857x_to_irq(struct gpio_chip *chip, unsigned offset)
return irq_create_mapping(gpio->irq_domain, offset);
}
static irqreturn_t pcf857x_irq(int irq, void *data)
{
struct pcf857x *gpio = data;
unsigned long change, i, status, flags;
status = gpio->read(gpio->client);
spin_lock_irqsave(&gpio->slock, flags);
change = gpio->status ^ status;
for_each_set_bit(i, &change, gpio->chip.ngpio)
generic_handle_irq(irq_find_mapping(gpio->irq_domain, i));
gpio->status = status;
spin_unlock_irqrestore(&gpio->slock, flags);
return IRQ_HANDLED;
}
static void pcf857x_irq_demux_work(struct work_struct *work)
{
struct pcf857x *gpio = container_of(work,
@ -218,8 +237,6 @@ static void pcf857x_irq_domain_cleanup(struct pcf857x *gpio)
if (gpio->irq_domain)
irq_domain_remove(gpio->irq_domain);
if (gpio->irq)
free_irq(gpio->irq, gpio);
}
static int pcf857x_irq_domain_init(struct pcf857x *gpio,
@ -235,8 +252,11 @@ static int pcf857x_irq_domain_init(struct pcf857x *gpio,
goto fail;
/* enable real irq */
status = request_irq(client->irq, pcf857x_irq_demux, 0,
dev_name(&client->dev), gpio);
status = devm_request_threaded_irq(&client->dev, client->irq,
NULL, pcf857x_irq, IRQF_ONESHOT |
IRQF_TRIGGER_FALLING,
dev_name(&client->dev), gpio);
if (status)
goto fail;