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Date: Mon, 24 Sep 2012 15:40:51 +0100
From: Steve Glendinning <steve.glendinning@...well.net>
To: netdev@...r.kernel.org
Cc: Steve Glendinning <steve.glendinning@...well.net>
Subject: [PATCH 2/5] 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@...well.net>
---
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 ed1e551..5d0256b 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -460,12 +460,10 @@ static int smsc95xx_link_reset(struct usbnet *dev)
struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
unsigned long flags;
u16 lcladv, rmtadv;
- u32 intdata;
/* clear interrupt status */
smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
- intdata = 0xFFFFFFFF;
- smsc95xx_write_reg(dev, INT_STS, intdata);
+ smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
mii_check_media(mii, 1, 1);
mii_ethtool_gset(&dev->mii, &ecmd);
@@ -677,7 +675,6 @@ static void smsc95xx_start_tx_path(struct usbnet *dev)
{
struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
unsigned long flags;
- u32 reg_val;
/* Enable Tx at MAC */
spin_lock_irqsave(&pdata->mac_cr_lock, flags);
@@ -687,8 +684,7 @@ static void smsc95xx_start_tx_path(struct usbnet *dev)
smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
/* Enable Tx at SCSRs */
- reg_val = TX_CFG_ON_;
- smsc95xx_write_reg(dev, TX_CFG, reg_val);
+ smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_);
}
/* Starts the Receive path */
@@ -753,8 +749,7 @@ 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_);
if (ret < 0) {
netdev_warn(dev->net, "Failed to write HW_CFG_LRST_ bit in HW_CFG register, ret = %d\n",
ret);
@@ -777,8 +772,7 @@ 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_);
if (ret < 0) {
netdev_warn(dev->net, "Failed to write PM_CTRL: %d\n", ret);
return ret;
@@ -863,8 +857,7 @@ 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);
if (ret < 0) {
netdev_warn(dev->net, "ret = %d\n", ret);
return ret;
@@ -910,8 +903,7 @@ 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_);
if (ret < 0) {
netdev_warn(dev->net, "Failed to write INT_STS register, ret=%d\n",
ret);
@@ -936,15 +928,13 @@ static int smsc95xx_reset(struct usbnet *dev)
}
/* Init Tx */
- write_buf = 0;
- ret = smsc95xx_write_reg(dev, FLOW, write_buf);
+ ret = smsc95xx_write_reg(dev, FLOW, 0);
if (ret < 0) {
netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
return 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);
if (ret < 0) {
netdev_warn(dev->net, "Failed to write AFC_CFG: %d\n", ret);
return ret;
@@ -959,8 +949,7 @@ 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);
if (ret < 0) {
netdev_warn(dev->net, "Failed to write VAN1: %d\n", ret);
return ret;
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)
--
1.7.9.5
--
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