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Diffstat (limited to 'target/linux/mvebu/patches-3.10/0081-net-phy-call-mdiobus_scan-after-adding-a-fixed-PHY.patch')
-rw-r--r--target/linux/mvebu/patches-3.10/0081-net-phy-call-mdiobus_scan-after-adding-a-fixed-PHY.patch42
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.10/0081-net-phy-call-mdiobus_scan-after-adding-a-fixed-PHY.patch b/target/linux/mvebu/patches-3.10/0081-net-phy-call-mdiobus_scan-after-adding-a-fixed-PHY.patch
new file mode 100644
index 0000000000..c052068138
--- /dev/null
+++ b/target/linux/mvebu/patches-3.10/0081-net-phy-call-mdiobus_scan-after-adding-a-fixed-PHY.patch
@@ -0,0 +1,42 @@
+From dce33dc5a6ba5f7fcbab4d7e92cc68c756a1f714 Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Date: Mon, 15 Jul 2013 17:34:09 +0200
+Subject: [PATCH 081/203] net: phy: call mdiobus_scan() after adding a fixed
+ PHY
+
+The fixed_phy_add() function allows to register a fixed PHY. However,
+when this function gets called *after* fixed_mdio_bus_init() (which
+gets called at the module_init stage), then the fixed PHY is not
+registered into the phylib.
+
+In order to address this, we add a call to mdiobus_scan() in
+fixed_phy_add() to ensure that the PHY indeed gets registered into the
+phylib, even if the fixed_phy_add() is called after
+fixed_mdio_bus_init().
+
+This is needed because until now, the only code that was calling the
+fixed_add_phy() function was PowerPC-specific platform code, which
+could ensure that such fixed PHYs get registered before
+fixed_mdio_bus_init() is called.
+
+However, with the new of_phy_register_fixed_link() function, device
+drivers can parse their 'fixed-link' property and register a fixed PHY
+at ->probe() time, which may happen after fixed_mdio_bus_init() is
+called.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+---
+ drivers/net/phy/fixed.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/net/phy/fixed.c
++++ b/drivers/net/phy/fixed.c
+@@ -195,6 +195,8 @@ int fixed_phy_add(unsigned int irq, int
+
+ list_add_tail(&fp->node, &fmb->phys);
+
++ mdiobus_scan(fmb->mii_bus, phy_id);
++
+ return 0;
+
+ err_regs: