In the driver probe function the emac module clock needs to
be enabled before calling register_netdev(). As soon as the
device is registered the driver get_stats function can be invoked
by the core - the module clock must be switched on to be able to
read from stats registers. Also explicitly call matching clk_disable
for failure conditions in probe function.
Signed-off-by: Sriramakrishnan <s...@ti.com>
---
This patch has been generated against tip of net-2.6.git
drivers/net/davinci_emac.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 34e0310..33c4fe2 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -2711,6 +2711,8 @@ static int __devinit davinci_emac_probe(struct
platform_device *pdev)
SET_ETHTOOL_OPS(ndev, ðtool_ops);
netif_napi_add(ndev, &priv->napi, emac_poll, EMAC_POLL_WEIGHT);
+ clk_enable(emac_clk);
+
/* register the network device */
SET_NETDEV_DEV(ndev, &pdev->dev);
rc = register_netdev(ndev);
@@ -2720,7 +2722,6 @@ static int __devinit davinci_emac_probe(struct
platform_device *pdev)
goto netdev_reg_err;
}
- clk_enable(emac_clk);
/* MII/Phy intialisation, mdio bus registration */
emac_mii = mdiobus_alloc();
@@ -2760,6 +2761,7 @@ mdiobus_quit:
netdev_reg_err:
mdio_alloc_err:
+ clk_disable(emac_clk);
no_irq_res:
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, res->end - res->start + 1);
--
1.6.2.4
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