net/macb: add pinctrl consumer support

If no pinctrl available just report a warning as some architecture may not
need to do anything.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
[nicolas.ferre@atmel.com: adapt the error path, remove unneeded headers]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index c1f20b0..c374875 100644 (file)
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -26,6 +26,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_net.h>
+#include <linux/pinctrl/consumer.h>
 
 #include "macb.h"
 
@@ -1472,6 +1473,7 @@ static int __init macb_probe(struct platform_device *pdev)
        struct phy_device *phydev;
        u32 config;
        int err = -ENXIO;
+       struct pinctrl *pinctrl;
 
        regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        if (!regs) {
@@ -1479,6 +1481,15 @@ static int __init macb_probe(struct platform_device *pdev)
                goto err_out;
        }
 
+       pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+       if (IS_ERR(pinctrl)) {
+               err = PTR_ERR(pinctrl);
+               if (err == -EPROBE_DEFER)
+                       goto err_out;
+
+               dev_warn(&pdev->dev, "No pinctrl provided\n");
+       }
+
        err = -ENOMEM;
        dev = alloc_etherdev(sizeof(*bp));
        if (!dev)