[PATCH] tty: evh_bytechan: Replace NO_IRQ by 0

[Christophe Leroy]

NO_IRQ is used to check the return of irq_of_parse_and_map().

On some architecture NO_IRQ is 0, on other architectures it is -1.

irq_of_parse_and_map() returns 0 on error, independent of NO_IRQ.

So use 0 instead of using NO_IRQ.

Signed-off-by: Christophe Leroy <christophe.le...@csgroup.eu>
---
 drivers/tty/ehv_bytechan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c
index 19d32cb6af84..8595483f4697 100644
--- a/drivers/tty/ehv_bytechan.c
+++ b/drivers/tty/ehv_bytechan.c
@@ -118,7 +118,7 @@ static int find_console_handle(void)
                return 0;
 
        stdout_irq = irq_of_parse_and_map(np, 0);
-       if (stdout_irq == NO_IRQ) {
+       if (!stdout_irq) {
                pr_err("ehv-bc: no 'interrupts' property in %pOF node\n", np);
                return 0;
        }
@@ -696,7 +696,7 @@ static int ehv_bc_tty_probe(struct platform_device *pdev)
 
        bc->rx_irq = irq_of_parse_and_map(np, 0);
        bc->tx_irq = irq_of_parse_and_map(np, 1);
-       if ((bc->rx_irq == NO_IRQ) || (bc->tx_irq == NO_IRQ)) {
+       if (!bc->rx_irq || !bc->tx_irq) {
                dev_err(&pdev->dev, "no 'interrupts' property in %pOFn node\n",
                        np);
                ret = -ENODEV;
-- 
2.37.1