[PATCH] ptp: ixp46x: remove NO_IRQ handling
From: Arnd Bergmann <arnd@arndb.de>
Date: 2016-09-06 14:28:30
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> --- drivers/ptp/ptp_ixp46x.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/ptp/ptp_ixp46x.c b/drivers/ptp/ptp_ixp46x.c
index ee4f183ef9ee..fbcb940b6348 100644
--- a/drivers/ptp/ptp_ixp46x.c
+++ b/drivers/ptp/ptp_ixp46x.c@@ -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;
--
2.9.0