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authorByungho An <bh74.an@samsung.com>2014-04-29 13:15:15 +0900
committerDavid S. Miller <davem@davemloft.net>2014-04-30 16:12:22 -0400
commit0a0347b1e65d0757024d9db0ffdeafb41a9d14f4 (patch)
tree2415c998ec40804f171f683231794f31c41eb6d2 /drivers/net/ethernet/samsung
parentd2e752db6d05374a35dddb2e17864fe310fbcf69 (diff)
downloadlinux-0a0347b1e65d0757024d9db0ffdeafb41a9d14f4.tar.bz2
net: sxgbe: sw reset moved to probe function
This patch moves sw reset to probe function because sw reset is needed early stage before open function. Signed-off-by: Byungho An <bh74.an@samsung.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/samsung')
-rw-r--r--drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c13
-rw-r--r--drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c22
2 files changed, 22 insertions, 13 deletions
diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c
index 4d989ff6c978..bb9b5b8afc5f 100644
--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c
+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c
@@ -23,21 +23,8 @@
/* DMA core initialization */
static int sxgbe_dma_init(void __iomem *ioaddr, int fix_burst, int burst_map)
{
- int retry_count = 10;
u32 reg_val;
- /* reset the DMA */
- writel(SXGBE_DMA_SOFT_RESET, ioaddr + SXGBE_DMA_MODE_REG);
- while (retry_count--) {
- if (!(readl(ioaddr + SXGBE_DMA_MODE_REG) &
- SXGBE_DMA_SOFT_RESET))
- break;
- mdelay(10);
- }
-
- if (retry_count < 0)
- return -EBUSY;
-
reg_val = readl(ioaddr + SXGBE_DMA_SYSBUS_MODE_REG);
/* if fix_burst = 0, Set UNDEF = 1 of DMA_Sys_Mode Register.
diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
index 27e8c824b204..6ad7b3aaaada 100644
--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
@@ -2070,6 +2070,24 @@ static int sxgbe_hw_init(struct sxgbe_priv_data * const priv)
return 0;
}
+static int sxgbe_sw_reset(void __iomem *addr)
+{
+ int retry_count = 10;
+
+ writel(SXGBE_DMA_SOFT_RESET, addr + SXGBE_DMA_MODE_REG);
+ while (retry_count--) {
+ if (!(readl(addr + SXGBE_DMA_MODE_REG) &
+ SXGBE_DMA_SOFT_RESET))
+ break;
+ mdelay(10);
+ }
+
+ if (retry_count < 0)
+ return -EBUSY;
+
+ return 0;
+}
+
/**
* sxgbe_drv_probe
* @device: device pointer
@@ -2102,6 +2120,10 @@ struct sxgbe_priv_data *sxgbe_drv_probe(struct device *device,
priv->plat = plat_dat;
priv->ioaddr = addr;
+ ret = sxgbe_sw_reset(priv->ioaddr);
+ if (ret)
+ goto error_free_netdev;
+
/* Verify driver arguments */
sxgbe_verify_args();