netdev - [PATCH 2/4] gianfar: Revive fixed link support

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Message-ID: <20090626222948.GB32487@oksana.dev.rtsoft.ru>
Date:	Sat, 27 Jun 2009 02:29:48 +0400
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	David Miller <davem@...emloft.net>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Li Yang <leoli@...escale.com>,
	Andy Fleming <afleming@...escale.com>, netdev@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: [PATCH 2/4] gianfar: Revive fixed link support

Since commit fe192a49118f5b1272317d60c7930ece4e13ae49 ("Rework gianfar
driver to use of_mdio infrastructure") the fixed-link support is
broken, the driver oopses at init_phy():

  Unable to handle kernel paging request for data at address 0x000000e4
  Faulting instruction address: 0xc01cf298
  Oops: Kernel access of bad area, sig: 11 [#1]
  [...]
  NIP [c01cf298] init_phy+0x80/0xdc
  LR [c01cf250] init_phy+0x38/0xdc
  Call Trace:
  [cf81fe80] [c01d1cf8] gfar_enet_open+0x6c/0x19c
  [cf81fea0] [c024494c] dev_open+0xfc/0x134
  [cf81fec0] [c0242edc] dev_change_flags+0x84/0x1ac
  [cf81fee0] [c0399ee0] ic_open_devs+0x168/0x2d8
  [cf81ff20] [c039b2e8] ip_auto_config+0x90/0x2a4
  [cf81ff60] [c0003884] do_one_initcall+0x34/0x1a8

This patch fixes the oops, and removes phy_node checks (of_phy_connect
call now tries to find fixed PHYs if the phy_node is NULL).

Also, remove an old fixed-link code that we don't use any longer.

Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
---
 drivers/net/gianfar.c |   21 +++++----------------
 1 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 4ae1d25..41b2107 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -262,15 +262,6 @@ static int gfar_of_init(struct net_device *dev)
 		priv->device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET;
 
 	priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
-	if (!priv->phy_node) {
-		u32 *fixed_link;
-
-		fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL);
-		if (!fixed_link) {
-			err = -ENODEV;
-			goto err_out;
-		}
-	}
 
 	/* Find the TBI PHY.  If it's not there, we don't support SGMII */
 	priv->tbi_node = of_parse_phandle(np, "tbi-handle", 0);
@@ -657,13 +648,11 @@ static int init_phy(struct net_device *dev)
 
 	interface = gfar_get_interface(dev);
 
-	if (priv->phy_node) {
-		priv->phydev = of_phy_connect(dev, priv->phy_node, &adjust_link,
-					      0, interface);
-		if (!priv->phydev) {
-			dev_err(&dev->dev, "error: Could not attach to PHY\n");
-			return -ENODEV;
-		}
+	priv->phydev = of_phy_connect(dev, priv->phy_node, &adjust_link, 0,
+				      interface);
+	if (!priv->phydev) {
+		dev_err(&dev->dev, "could not attach to PHY\n");
+		return -ENODEV;
 	}
 
 	if (interface == PHY_INTERFACE_MODE_SGMII)
-- 
1.6.3.1

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