[v2,2/2] net: davinci_emac: match the mdio device against its compatible if possible

Commit Message

Bartosz Golaszewski June 20, 2018, 8:03 a.m. UTC

From: Bartosz Golaszewski <[e-mail]>

Device tree based systems without of_dev_auxdata will have the mdio
device named differently than "davinci_mdio(.0)". In this case use the
device's parent's compatible string for matching

Signed-off-by: Bartosz Golaszewski <[e-mail]>
---
 drivers/net/ethernet/ti/davinci_emac.c | 4 ++++
 1 file changed, 4 insertions(+)

Patch

diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index a1a6445b5a7e..f270beebb428 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1387,6 +1387,10 @@  static int emac_devioctl(struct net_device *ndev, struct ifreq *ifrq, int cmd)
 
 static int match_first_device(struct device *dev, void *data)
 {
+	if (dev->parent && dev->parent->of_node)
+		return of_device_is_compatible(dev->parent->of_node,
+					       "ti,davinci_mdio");
+
 	return !strncmp(dev_name(dev), "davinci_mdio", 12);
 }