netdev - [PATCH] net/smsc911x: Fix deferred probe for interrupt

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Message-Id: <1440787815-24655-1-git-send-email-tony@atomide.com>
Date:	Fri, 28 Aug 2015 11:50:15 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, linux-omap@...r.kernel.org,
	Steve Glendinning <steve.glendinning@...well.net>
Subject: [PATCH] net/smsc911x: Fix deferred probe for interrupt

The interrupt handler may not be available when smsc911x probes if the
interrupt handler is a GPIO controller for example. Let's fix that
by adding handling for -EPROBE_DEFER.

Cc: Steve Glendinning <steve.glendinning@...well.net>
Signed-off-by: Tony Lindgren <tony@...mide.com>
---
 drivers/net/ethernet/smsc/smsc911x.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c
index 959aeea..cb9f166f 100644
--- a/drivers/net/ethernet/smsc/smsc911x.c
+++ b/drivers/net/ethernet/smsc/smsc911x.c
@@ -2435,7 +2435,10 @@ static int smsc911x_drv_probe(struct platform_device *pdev)
 	res_size = resource_size(res);
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq <= 0) {
+	if (irq == -EPROBE_DEFER) {
+		retval = -EPROBE_DEFER;
+		goto out_0;
+	} else if (irq <= 0) {
 		pr_warn("Could not allocate irq resource\n");
 		retval = -ENODEV;
 		goto out_0;
-- 
2.1.4

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