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authorDavid Daney <ddaney@caviumnetworks.com>2010-04-01 18:17:54 -0700
committerRalf Baechle <ralf@linux-mips.org>2010-04-30 20:52:52 +0100
commit6c17812d622a74950e2cd65f368f0518491cca61 (patch)
tree19577e2567bf4886257bd4190de6d77b275d49e6
parent20f12160607c09e299a3e93c7bf4d75e8801c9b7 (diff)
NET: mdio-octeon: Enable the hardware before using it.
In some cases the mdio bus is not enabled at the time of probing. This prevents anything from working, so we will enable it before trying to use it, and disable it when the driver is removed. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org To: netdev@vger.kernel.org To: gregkh@suse.de Patchwork: http://patchwork.linux-mips.org/patch/1090/ Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--drivers/net/phy/mdio-octeon.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/phy/mdio-octeon.c b/drivers/net/phy/mdio-octeon.c
index a872aea4ed7..f443d43edd8 100644
--- a/drivers/net/phy/mdio-octeon.c
+++ b/drivers/net/phy/mdio-octeon.c
@@ -88,6 +88,7 @@ static int octeon_mdiobus_write(struct mii_bus *bus, int phy_id,
static int __init octeon_mdiobus_probe(struct platform_device *pdev)
{
struct octeon_mdiobus *bus;
+ union cvmx_smix_en smi_en;
int i;
int err = -ENOENT;
@@ -103,6 +104,10 @@ static int __init octeon_mdiobus_probe(struct platform_device *pdev)
if (!bus->mii_bus)
goto err;
+ smi_en.u64 = 0;
+ smi_en.s.en = 1;
+ cvmx_write_csr(CVMX_SMIX_EN(bus->unit), smi_en.u64);
+
/*
* Standard Octeon evaluation boards don't support phy
* interrupts, we need to poll.
@@ -133,17 +138,22 @@ err_register:
err:
devm_kfree(&pdev->dev, bus);
+ smi_en.u64 = 0;
+ cvmx_write_csr(CVMX_SMIX_EN(bus->unit), smi_en.u64);
return err;
}
static int __exit octeon_mdiobus_remove(struct platform_device *pdev)
{
struct octeon_mdiobus *bus;
+ union cvmx_smix_en smi_en;
bus = dev_get_drvdata(&pdev->dev);
mdiobus_unregister(bus->mii_bus);
mdiobus_free(bus->mii_bus);
+ smi_en.u64 = 0;
+ cvmx_write_csr(CVMX_SMIX_EN(bus->unit), smi_en.u64);
return 0;
}