[PATCH 3/4] net: systemport: Propagate IRQ lookup errors

[phucduc.bui@gmail.com]

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

Propagate the error codes returned by platform_get_irq() and
platform_get_irq_optional() instead of converting them to -EINVAL.

For the optional WoL IRQ, allow -ENXIO to indicate that the IRQ is not
available, but propagate any other error returned by the IRQ lookup.

Found by manual code inspection.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 drivers/net/ethernet/broadcom/bcmsysport.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 4d06c6ba6641..2acaffccdb08 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -2499,14 +2499,22 @@ static int bcm_sysport_probe(struct platform_device *pdev)
 	priv->num_rx_desc_words = params->num_rx_desc_words;
 
 	priv->irq0 = platform_get_irq(pdev, 0);
+	if (priv->irq0 < 0) {
+		ret = priv->irq0;
+		goto err_free_netdev;
+	}
 	if (!priv->is_lite) {
 		priv->irq1 = platform_get_irq(pdev, 1);
 		priv->wol_irq = platform_get_irq_optional(pdev, 2);
 	} else {
 		priv->wol_irq = platform_get_irq_optional(pdev, 1);
 	}
-	if (priv->irq0 <= 0 || (priv->irq1 <= 0 && !priv->is_lite)) {
-		ret = -EINVAL;
+	if (priv->irq1 < 0 && !priv->is_lite) {
+		ret = priv->irq1;
+		goto err_free_netdev;
+	}
+	if (priv->wol_irq < 0 && priv->wol_irq != -ENXIO) {
+		ret = priv->wol_irq;
 		goto err_free_netdev;
 	}
 
-- 
2.43.0