diff options
Diffstat (limited to 'target/linux/sunxi/patches-3.13/190-stmmac-enable-main-clock-when-probing.patch')
| -rw-r--r-- | target/linux/sunxi/patches-3.13/190-stmmac-enable-main-clock-when-probing.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-3.13/190-stmmac-enable-main-clock-when-probing.patch b/target/linux/sunxi/patches-3.13/190-stmmac-enable-main-clock-when-probing.patch new file mode 100644 index 0000000000..f7085843d3 --- /dev/null +++ b/target/linux/sunxi/patches-3.13/190-stmmac-enable-main-clock-when-probing.patch @@ -0,0 +1,71 @@ +From 133a9b75e2b0c48cd1d8f93b0ee61089821c32d9 Mon Sep 17 00:00:00 2001 +From: Chen-Yu Tsai <wens@csie.org> +Date: Sat, 7 Dec 2013 01:29:34 +0800 +Subject: [PATCH] net: stmmac: Enable stmmac main clock when probing hardware + +Signed-off-by: Chen-Yu Tsai <wens@csie.org> +--- + drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 24 +++++++++++++---------- + 1 file changed, 14 insertions(+), 10 deletions(-) + +diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +index 8a7a23a..4d75cba 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c ++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +@@ -2682,10 +2682,17 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device, + if ((phyaddr >= 0) && (phyaddr <= 31)) + priv->plat->phy_addr = phyaddr; + ++ priv->stmmac_clk = clk_get(priv->device, STMMAC_RESOURCE_NAME); ++ if (IS_ERR(priv->stmmac_clk)) { ++ pr_warn("%s: warning: cannot get CSR clock\n", __func__); ++ goto error_clk_get; ++ } ++ clk_prepare_enable(priv->stmmac_clk); ++ + /* Init MAC and get the capabilities */ + ret = stmmac_hw_init(priv); + if (ret) +- goto error_free_netdev; ++ goto error_hw_init; + + ndev->netdev_ops = &stmmac_netdev_ops; + +@@ -2723,12 +2730,6 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device, + goto error_netdev_register; + } + +- priv->stmmac_clk = clk_get(priv->device, STMMAC_RESOURCE_NAME); +- if (IS_ERR(priv->stmmac_clk)) { +- pr_warn("%s: warning: cannot get CSR clock\n", __func__); +- goto error_clk_get; +- } +- + /* If a specific clk_csr value is passed from the platform + * this means that the CSR Clock Range selection cannot be + * changed at run-time and it is fixed. Viceversa the driver'll try to +@@ -2753,15 +2754,18 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device, + } + } + ++ clk_disable_unprepare(priv->stmmac_clk); ++ + return priv; + + error_mdio_register: +- clk_put(priv->stmmac_clk); +-error_clk_get: + unregister_netdev(ndev); + error_netdev_register: + netif_napi_del(&priv->napi); +-error_free_netdev: ++error_hw_init: ++ clk_disable_unprepare(priv->stmmac_clk); ++ clk_put(priv->stmmac_clk); ++error_clk_get: + free_netdev(ndev); + + return NULL; +-- +1.8.5.1 + |