uli526x partially recognizing interface

Patch fixes:
    http://bugzilla.kernel.org/show_bug.cgi?id=5839

Init sequence needs to poll phy until phy reset is complete. This is the
same problem that I fixed in 2002 in tulip driver.

Thanks to manty@manty.net for testing this patch.
Thanks to Pozsar Balazs <pozsy@uhulinux.hu> for posting/testing
a similar patch before:
    http://lkml.org/lkml/2006/8/21/45

Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/net/tulip/uli526x.c b/drivers/net/tulip/uli526x.c
index a7afeea156bd5f80229b6b8a55b3952f3c764299..a59c1f224aa8ef230f8e42f9aa8200373417b70f 100644 (file)
--- a/drivers/net/tulip/uli526x.c
+++ b/drivers/net/tulip/uli526x.c
@@ -482,9 +482,11 @@ static void uli526x_init(struct net_device *dev)
        struct uli526x_board_info *db = netdev_priv(dev);
        unsigned long ioaddr = db->ioaddr;
        u8      phy_tmp;
+       u8      timeout;
        u16     phy_value;
        u16 phy_reg_reset;
 
+
        ULI526X_DBUG(0, "uli526x_init()", 0);
 
        /* Reset M526x MAC controller */
@@ -509,11 +511,19 @@ static void uli526x_init(struct net_device *dev)
        /* Parser SROM and media mode */
        db->media_mode = uli526x_media_mode;
 
-       /* Phyxcer capability setting */
+       /* phyxcer capability setting */
        phy_reg_reset = phy_read(db->ioaddr, db->phy_addr, 0, db->chip_id);
        phy_reg_reset = (phy_reg_reset | 0x8000);
        phy_write(db->ioaddr, db->phy_addr, 0, phy_reg_reset, db->chip_id);
+
+       /* See IEEE 802.3-2002.pdf (Section 2, Chapter "22.2.4 Management
+        * functions") or phy data sheet for details on phy reset
+        */
        udelay(500);
+       timeout = 10;
+       while (timeout-- &&
+               phy_read(db->ioaddr, db->phy_addr, 0, db->chip_id) & 0x8000)
+                       udelay(100);
 
        /* Process Phyxcer Media Mode */
        uli526x_set_phyxcer(db);