[PATCH 4/7] can/at91: don't check platform_get_irq's return value against zero

[Uwe Kleine-KÃnig]

platform_get_irq returns -ENXIO on failure, so !irq was probably
always true.  Better use (int)irq <= 0.  Note that a return value of
zero is still handled as error even though this could mean irq0.

This is a followup to 305b3228f9ff4d59f49e6d34a7034d44ee8ce2f0 that
changed the return value of platform_get_irq from 0 to -ENXIO on error.

Signed-off-by: Uwe Kleine-KÃnig <u.kleine-koenig@xxxxxxxxxxxxxx>
Cc: David Vrabel <dvrabel@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxx>
Cc: Urs Thuermann <urs.thuermann@xxxxxxxxxxxxx>
Cc: Oliver Hartkopp <oliver.hartkopp@xxxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Wolfgang Grandegger <wg@xxxxxxxxxxxxxx>
Cc: Kurt Van Dijck <kurt.van.dijck@xxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
---
 drivers/net/can/at91_can.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index cbe3fce..631d404 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -1037,7 +1037,7 @@ static int __init at91_can_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq = platform_get_irq(pdev, 0);
-	if (!res || !irq) {
+	if (!res || irq <= 0) {
 		err = -ENODEV;
 		goto exit_put;
 	}
-- 
1.6.5.2

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