[PATCH net] net: mvpp2: Fix IRQ error handling

[phucduc.bui@gmail.com]

From: bui duc phuc <phucduc.bui@gmail.com>

irq_of_parse_and_map() returns 0 when parsing or mapping an IRQ fails.
The current code does not handle this return value correctly.

Check for a zero return value and return -EINVAL when the IRQ lookup
fails.

Fixes: 591f4cfab38a ("net: mvpp2: introduce queue_vector concept")
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index ccc24a1301f2..1c50174c9f1e 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -5874,7 +5874,7 @@ static int mvpp2_simple_queue_vectors_init(struct mvpp2_port *port,
 	v->sw_thread_mask = *cpumask_bits(cpu_online_mask);
 	v->port = port;
 	v->irq = irq_of_parse_and_map(port_node, 0);
-	if (v->irq <= 0)
+	if (!v->irq)
 		return -EINVAL;
 	netif_napi_add(port->dev, &v->napi, mvpp2_poll);
 
-- 
2.43.0