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Date: Wed, 10 Mar 2010 18:32:39 +0000
From: Steve Glendinning <steve.glendinning@...c.com>
To: netdev@...r.kernel.org
Subject: [PATCH 6/6] smsc95xx: remove unnecessary variables
Removes unnecessary variables as smsc95xx_write_reg takes its
value by parameter. Early versions passed this parameter by
reference.
Also replace hardcoded interrupt status value with a #define
Signed-off-by: Steve Glendinning <steve.glendinning@...c.com>
---
drivers/net/usb/smsc95xx.c | 29 +++++++++--------------------
drivers/net/usb/smsc95xx.h | 1 +
2 files changed, 10 insertions(+), 20 deletions(-)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index aeaa793..18adc39 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -485,15 +485,13 @@ static int smsc95xx_link_reset(struct usbnet *dev)
struct ethtool_cmd ecmd;
unsigned long flags;
u16 lcladv, rmtadv;
- u32 intdata;
int ret;
/* clear interrupt status */
ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
check_warn_return(ret, "Error reading PHY_INT_SRC");
- intdata = 0xFFFFFFFF;
- ret = smsc95xx_write_reg(dev, INT_STS, intdata);
+ ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
check_warn_return(ret, "Error writing INT_STS");
mii_check_media(mii, 1, 1);
@@ -700,7 +698,6 @@ static int smsc95xx_start_tx_path(struct usbnet *dev)
{
struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
unsigned long flags;
- u32 reg_val;
int ret;
/* Enable Tx at MAC */
@@ -712,8 +709,7 @@ static int smsc95xx_start_tx_path(struct usbnet *dev)
check_warn_return(ret, "Failed to write MAC_CR: %d\n", ret);
/* Enable Tx at SCSRs */
- reg_val = TX_CFG_ON_;
- ret = smsc95xx_write_reg(dev, TX_CFG, reg_val);
+ ret = smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_);
check_warn_return(ret, "Failed to write TX_CFG: %d\n", ret);
return 0;
@@ -786,8 +782,7 @@ static int smsc95xx_reset(struct usbnet *dev)
netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n");
- write_buf = HW_CFG_LRST_;
- ret = smsc95xx_write_reg(dev, HW_CFG, write_buf);
+ ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_);
check_warn_return(ret, "Failed to write HW_CFG: %d\n", ret);
timeout = 0;
@@ -803,8 +798,7 @@ static int smsc95xx_reset(struct usbnet *dev)
return ret;
}
- write_buf = PM_CTL_PHY_RST_;
- ret = smsc95xx_write_reg(dev, PM_CTRL, write_buf);
+ ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_);
check_warn_return(ret, "Failed to write PM_CTRL: %d\n", ret);
timeout = 0;
@@ -871,8 +865,7 @@ static int smsc95xx_reset(struct usbnet *dev)
"Read Value from BURST_CAP after writing: 0x%08x\n",
read_buf);
- read_buf = DEFAULT_BULK_IN_DELAY;
- ret = smsc95xx_write_reg(dev, BULK_IN_DLY, read_buf);
+ ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
check_warn_return(ret, "Failed to write BULK_IN_DLY: %d\n", ret);
ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf);
@@ -905,8 +898,7 @@ static int smsc95xx_reset(struct usbnet *dev)
netif_dbg(dev, ifup, dev->net,
"Read Value from HW_CFG after writing: 0x%08x\n", read_buf);
- write_buf = 0xFFFFFFFF;
- ret = smsc95xx_write_reg(dev, INT_STS, write_buf);
+ ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
check_warn_return(ret, "Failed to write INT_STS: %d\n", ret);
ret = smsc95xx_read_reg(dev, ID_REV, &read_buf);
@@ -921,12 +913,10 @@ static int smsc95xx_reset(struct usbnet *dev)
check_warn_return(ret, "Failed to write LED_GPIO_CFG: %d\n", ret);
/* Init Tx */
- write_buf = 0;
- ret = smsc95xx_write_reg(dev, FLOW, write_buf);
+ ret = smsc95xx_write_reg(dev, FLOW, 0);
check_warn_return(ret, "Failed to write FLOW: %d\n", ret);
- read_buf = AFC_CFG_DEFAULT;
- ret = smsc95xx_write_reg(dev, AFC_CFG, read_buf);
+ ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT);
check_warn_return(ret, "Failed to write AFC_CFG: %d\n", ret);
/* Don't need mac_cr_lock during initialisation */
@@ -935,8 +925,7 @@ static int smsc95xx_reset(struct usbnet *dev)
/* Init Rx */
/* Set Vlan */
- write_buf = (u32)ETH_P_8021Q;
- ret = smsc95xx_write_reg(dev, VLAN1, write_buf);
+ ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q);
check_warn_return(ret, "Failed to write VLAN1: %d\n", ret);
/* Enable or disable checksum offload engines */
diff --git a/drivers/net/usb/smsc95xx.h b/drivers/net/usb/smsc95xx.h
index 86bc449..a275b62 100644
--- a/drivers/net/usb/smsc95xx.h
+++ b/drivers/net/usb/smsc95xx.h
@@ -63,6 +63,7 @@
#define INT_STS_TDFO_ (0x00001000)
#define INT_STS_RXDF_ (0x00000800)
#define INT_STS_GPIOS_ (0x000007FF)
+#define INT_STS_CLEAR_ALL_ (0xFFFFFFFF)
#define RX_CFG (0x0C)
#define RX_FIFO_FLUSH_ (0x00000001)
--
1.6.6.1
--
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