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ptp: ixp46x: remove NO_IRQ handling 

gpio_to_irq does not return NO_IRQ but instead returns a negative
error code on failure. Returning NO_IRQ from the function has no
negative effects as we only compare the result to the expected
interrupt number, but it's better to return a proper failure
code for consistency, and we should remove NO_IRQ from the kernel
entirely.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2016-09-06 21:20:36 +02:00 committed by David S. Miller
parent 72a31d85a5
commit cf86799e81
1 changed files with 8 additions and 7 deletions
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15
drivers/ptp/ptp_ixp46x.c
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@ -268,18 +268,19 @@ static int setup_interrupt(int gpio)
return err;
irq = gpio_to_irq(gpio);
if (irq < 0)
return irq;
if (NO_IRQ == irq)
return NO_IRQ;
if (irq_set_irq_type(irq, IRQF_TRIGGER_FALLING)) {
err = irq_set_irq_type(irq, IRQF_TRIGGER_FALLING);
if (err) {
pr_err("cannot set trigger type for irq %d\n", irq);
return NO_IRQ;
return err;
}
if (request_irq(irq, isr, 0, DRIVER, &ixp_clock)) {
err = request_irq(irq, isr, 0, DRIVER, &ixp_clock);
if (err) {
pr_err("request_irq failed for irq %d\n", irq);
return NO_IRQ;
return err;
}
return irq;