From: Steve Glendinning Date: Fri, 28 Sep 2012 00:07:09 +0000 (+0000) Subject: smsc95xx: check return code from control messages X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=769ea6d89d5b915415a95432ff102c0aaf65e916;p=~shefty%2Frdma-dev.git smsc95xx: check return code from control messages This patch adds additional checks of the values returned by smsc95xx_(read|write)_reg, and wraps their common patterns in macros. Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 5d0256b5b8a..d0ff01ee0b6 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -47,6 +47,15 @@ #define SMSC95XX_TX_OVERHEAD (8) #define SMSC95XX_TX_OVERHEAD_CSUM (12) +#define check_warn(ret, fmt, args...) \ + ({ if (ret < 0) netdev_warn(dev->net, fmt, ##args); }) + +#define check_warn_return(ret, fmt, args...) \ + ({ if (ret < 0) { netdev_warn(dev->net, fmt, ##args); return ret; } }) + +#define check_warn_goto_done(ret, fmt, args...) \ + ({ if (ret < 0) { netdev_warn(dev->net, fmt, ##args); goto done; } }) + struct smsc95xx_priv { u32 mac_cr; u32 hash_hi; @@ -63,7 +72,8 @@ static bool turbo_mode = true; module_param(turbo_mode, bool, 0644); MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); -static int smsc95xx_read_reg(struct usbnet *dev, u32 index, u32 *data) +static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index, + u32 *data) { u32 *buf = kmalloc(4, GFP_KERNEL); int ret; @@ -88,7 +98,8 @@ static int smsc95xx_read_reg(struct usbnet *dev, u32 index, u32 *data) return ret; } -static int smsc95xx_write_reg(struct usbnet *dev, u32 index, u32 data) +static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index, + u32 data) { u32 *buf = kmalloc(4, GFP_KERNEL); int ret; @@ -116,13 +127,15 @@ static int smsc95xx_write_reg(struct usbnet *dev, u32 index, u32 data) /* Loop until the read is completed with timeout * called with phy_mutex held */ -static int smsc95xx_phy_wait_not_busy(struct usbnet *dev) +static int __must_check smsc95xx_phy_wait_not_busy(struct usbnet *dev) { unsigned long start_time = jiffies; u32 val; + int ret; do { - smsc95xx_read_reg(dev, MII_ADDR, &val); + ret = smsc95xx_read_reg(dev, MII_ADDR, &val); + check_warn_return(ret, "Error reading MII_ACCESS"); if (!(val & MII_BUSY_)) return 0; } while (!time_after(jiffies, start_time + HZ)); @@ -134,33 +147,32 @@ static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx) { struct usbnet *dev = netdev_priv(netdev); u32 val, addr; + int ret; mutex_lock(&dev->phy_mutex); /* confirm MII not busy */ - if (smsc95xx_phy_wait_not_busy(dev)) { - netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n"); - mutex_unlock(&dev->phy_mutex); - return -EIO; - } + ret = smsc95xx_phy_wait_not_busy(dev); + check_warn_goto_done(ret, "MII is busy in smsc95xx_mdio_read"); /* set the address, index & direction (read from PHY) */ phy_id &= dev->mii.phy_id_mask; idx &= dev->mii.reg_num_mask; addr = (phy_id << 11) | (idx << 6) | MII_READ_; - smsc95xx_write_reg(dev, MII_ADDR, addr); + ret = smsc95xx_write_reg(dev, MII_ADDR, addr); + check_warn_goto_done(ret, "Error writing MII_ADDR"); - if (smsc95xx_phy_wait_not_busy(dev)) { - netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); - mutex_unlock(&dev->phy_mutex); - return -EIO; - } + ret = smsc95xx_phy_wait_not_busy(dev); + check_warn_goto_done(ret, "Timed out reading MII reg %02X", idx); - smsc95xx_read_reg(dev, MII_DATA, &val); + ret = smsc95xx_read_reg(dev, MII_DATA, &val); + check_warn_goto_done(ret, "Error reading MII_DATA"); - mutex_unlock(&dev->phy_mutex); + ret = (u16)(val & 0xFFFF); - return (u16)(val & 0xFFFF); +done: + mutex_unlock(&dev->phy_mutex); + return ret; } static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, @@ -168,38 +180,41 @@ static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, { struct usbnet *dev = netdev_priv(netdev); u32 val, addr; + int ret; mutex_lock(&dev->phy_mutex); /* confirm MII not busy */ - if (smsc95xx_phy_wait_not_busy(dev)) { - netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n"); - mutex_unlock(&dev->phy_mutex); - return; - } + ret = smsc95xx_phy_wait_not_busy(dev); + check_warn_goto_done(ret, "MII is busy in smsc95xx_mdio_write"); val = regval; - smsc95xx_write_reg(dev, MII_DATA, val); + ret = smsc95xx_write_reg(dev, MII_DATA, val); + check_warn_goto_done(ret, "Error writing MII_DATA"); /* set the address, index & direction (write to PHY) */ phy_id &= dev->mii.phy_id_mask; idx &= dev->mii.reg_num_mask; addr = (phy_id << 11) | (idx << 6) | MII_WRITE_; - smsc95xx_write_reg(dev, MII_ADDR, addr); + ret = smsc95xx_write_reg(dev, MII_ADDR, addr); + check_warn_goto_done(ret, "Error writing MII_ADDR"); - if (smsc95xx_phy_wait_not_busy(dev)) - netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); + ret = smsc95xx_phy_wait_not_busy(dev); + check_warn_goto_done(ret, "Timed out writing MII reg %02X", idx); +done: mutex_unlock(&dev->phy_mutex); } -static int smsc95xx_wait_eeprom(struct usbnet *dev) +static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev) { unsigned long start_time = jiffies; u32 val; + int ret; do { - smsc95xx_read_reg(dev, E2P_CMD, &val); + ret = smsc95xx_read_reg(dev, E2P_CMD, &val); + check_warn_return(ret, "Error reading E2P_CMD"); if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) break; udelay(40); @@ -213,13 +228,15 @@ static int smsc95xx_wait_eeprom(struct usbnet *dev) return 0; } -static int smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) +static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) { unsigned long start_time = jiffies; u32 val; + int ret; do { - smsc95xx_read_reg(dev, E2P_CMD, &val); + ret = smsc95xx_read_reg(dev, E2P_CMD, &val); + check_warn_return(ret, "Error reading E2P_CMD"); if (!(val & E2P_CMD_BUSY_)) return 0; @@ -246,13 +263,15 @@ static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, for (i = 0; i < length; i++) { val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); - smsc95xx_write_reg(dev, E2P_CMD, val); + ret = smsc95xx_write_reg(dev, E2P_CMD, val); + check_warn_return(ret, "Error writing E2P_CMD"); ret = smsc95xx_wait_eeprom(dev); if (ret < 0) return ret; - smsc95xx_read_reg(dev, E2P_DATA, &val); + ret = smsc95xx_read_reg(dev, E2P_DATA, &val); + check_warn_return(ret, "Error reading E2P_DATA"); data[i] = val & 0xFF; offset++; @@ -276,7 +295,8 @@ static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, /* Issue write/erase enable command */ val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_; - smsc95xx_write_reg(dev, E2P_CMD, val); + ret = smsc95xx_write_reg(dev, E2P_CMD, val); + check_warn_return(ret, "Error writing E2P_DATA"); ret = smsc95xx_wait_eeprom(dev); if (ret < 0) @@ -286,11 +306,13 @@ static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, /* Fill data register */ val = data[i]; - smsc95xx_write_reg(dev, E2P_DATA, val); + ret = smsc95xx_write_reg(dev, E2P_DATA, val); + check_warn_return(ret, "Error writing E2P_DATA"); /* Send "write" command */ val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_); - smsc95xx_write_reg(dev, E2P_CMD, val); + ret = smsc95xx_write_reg(dev, E2P_CMD, val); + check_warn_return(ret, "Error writing E2P_CMD"); ret = smsc95xx_wait_eeprom(dev); if (ret < 0) @@ -308,14 +330,14 @@ static void smsc95xx_async_cmd_callback(struct urb *urb) struct usbnet *dev = usb_context->dev; int status = urb->status; - if (status < 0) - netdev_warn(dev->net, "async callback failed with %d\n", status); + check_warn(status, "async callback failed with %d\n", status); kfree(usb_context); usb_free_urb(urb); } -static int smsc95xx_write_reg_async(struct usbnet *dev, u16 index, u32 *data) +static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index, + u32 *data) { struct usb_context *usb_context; int status; @@ -371,6 +393,7 @@ static void smsc95xx_set_multicast(struct net_device *netdev) struct usbnet *dev = netdev_priv(netdev); struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); unsigned long flags; + int ret; pdata->hash_hi = 0; pdata->hash_lo = 0; @@ -411,21 +434,23 @@ static void smsc95xx_set_multicast(struct net_device *netdev) spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); /* Initiate async writes, as we can't wait for completion here */ - smsc95xx_write_reg_async(dev, HASHH, &pdata->hash_hi); - smsc95xx_write_reg_async(dev, HASHL, &pdata->hash_lo); - smsc95xx_write_reg_async(dev, MAC_CR, &pdata->mac_cr); + ret = smsc95xx_write_reg_async(dev, HASHH, &pdata->hash_hi); + check_warn(ret, "failed to initiate async write to HASHH"); + + ret = smsc95xx_write_reg_async(dev, HASHL, &pdata->hash_lo); + check_warn(ret, "failed to initiate async write to HASHL"); + + ret = smsc95xx_write_reg_async(dev, MAC_CR, &pdata->mac_cr); + check_warn(ret, "failed to initiate async write to MAC_CR"); } -static void smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, - u16 lcladv, u16 rmtadv) +static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, + u16 lcladv, u16 rmtadv) { u32 flow, afc_cfg = 0; int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg); - if (ret < 0) { - netdev_warn(dev->net, "error reading AFC_CFG\n"); - return; - } + check_warn_return(ret, "Error reading AFC_CFG"); if (duplex == DUPLEX_FULL) { u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); @@ -449,8 +474,13 @@ static void smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, afc_cfg |= 0xF; } - smsc95xx_write_reg(dev, FLOW, flow); - smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); + ret = smsc95xx_write_reg(dev, FLOW, flow); + check_warn_return(ret, "Error writing FLOW"); + + ret = smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); + check_warn_return(ret, "Error writing AFC_CFG"); + + return 0; } static int smsc95xx_link_reset(struct usbnet *dev) @@ -460,10 +490,14 @@ static int smsc95xx_link_reset(struct usbnet *dev) struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; unsigned long flags; u16 lcladv, rmtadv; + int ret; /* clear interrupt status */ - smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); - smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); + ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); + check_warn_return(ret, "Error reading PHY_INT_SRC"); + + 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); mii_ethtool_gset(&dev->mii, &ecmd); @@ -484,9 +518,11 @@ static int smsc95xx_link_reset(struct usbnet *dev) } spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); - smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); + ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); + check_warn_return(ret, "Error writing MAC_CR"); - smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); + ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); + check_warn_return(ret, "Error updating PHY flow control"); return 0; } @@ -522,10 +558,7 @@ static int smsc95xx_set_features(struct net_device *netdev, int ret; ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read COE_CR: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read COE_CR: %d\n", ret); if (features & NETIF_F_HW_CSUM) read_buf |= Tx_COE_EN_; @@ -538,10 +571,7 @@ static int smsc95xx_set_features(struct net_device *netdev, read_buf &= ~Rx_COE_EN_; ret = smsc95xx_write_reg(dev, COE_CR, read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write COE_CR: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to write COE_CR: %d\n", ret); netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf); return 0; @@ -656,53 +686,56 @@ static int smsc95xx_set_mac_address(struct usbnet *dev) int ret; ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write ADDRL: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to write ADDRL: %d\n", ret); ret = smsc95xx_write_reg(dev, ADDRH, addr_hi); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write ADDRH: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to write ADDRH: %d\n", ret); return 0; } /* starts the TX path */ -static void smsc95xx_start_tx_path(struct usbnet *dev) +static int smsc95xx_start_tx_path(struct usbnet *dev) { struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); unsigned long flags; + int ret; /* Enable Tx at MAC */ spin_lock_irqsave(&pdata->mac_cr_lock, flags); pdata->mac_cr |= MAC_CR_TXEN_; spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); - smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); + ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); + check_warn_return(ret, "Failed to write MAC_CR: %d\n", ret); /* Enable Tx at SCSRs */ - smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_); + ret = smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_); + check_warn_return(ret, "Failed to write TX_CFG: %d\n", ret); + + return 0; } /* Starts the Receive path */ -static void smsc95xx_start_rx_path(struct usbnet *dev) +static int smsc95xx_start_rx_path(struct usbnet *dev) { struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); unsigned long flags; + int ret; spin_lock_irqsave(&pdata->mac_cr_lock, flags); pdata->mac_cr |= MAC_CR_RXEN_; spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); - smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); + ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); + check_warn_return(ret, "Failed to write MAC_CR: %d\n", ret); + + return 0; } static int smsc95xx_phy_initialize(struct usbnet *dev) { - int bmcr, timeout = 0; + int bmcr, ret, timeout = 0; /* Initialize MII structure */ dev->mii.dev = dev->net; @@ -731,7 +764,8 @@ static int smsc95xx_phy_initialize(struct usbnet *dev) ADVERTISE_PAUSE_ASYM); /* read to clear */ - smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); + ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); + check_warn_return(ret, "Failed to read PHY_INT_SRC during init"); smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, PHY_INT_MASK_DEFAULT_); @@ -750,20 +784,13 @@ static int smsc95xx_reset(struct usbnet *dev) netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); 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); - return ret; - } + check_warn_return(ret, "Failed to write HW_CFG_LRST_ bit in HW_CFG\n"); timeout = 0; do { msleep(10); ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read HW_CFG: %d\n", ret); timeout++; } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); @@ -773,19 +800,13 @@ static int smsc95xx_reset(struct usbnet *dev) } 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; - } + check_warn_return(ret, "Failed to write PM_CTRL: %d\n", ret); timeout = 0; do { msleep(10); ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read PM_CTRL: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read PM_CTRL: %d\n", ret); timeout++; } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); @@ -802,10 +823,7 @@ static int smsc95xx_reset(struct usbnet *dev) "MAC Address: %pM\n", dev->net->dev_addr); ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read HW_CFG: %d\n", ret); netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", read_buf); @@ -813,17 +831,10 @@ static int smsc95xx_reset(struct usbnet *dev) read_buf |= HW_CFG_BIR_; ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write HW_CFG_BIR_ bit in HW_CFG register, ret = %d\n", - ret); - return ret; - } + check_warn_return(ret, "Failed to write HW_CFG_BIR_ bit in HW_CFG\n"); ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read HW_CFG: %d\n", ret); netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", read_buf); @@ -843,40 +854,28 @@ static int smsc95xx_reset(struct usbnet *dev) "rx_urb_size=%ld\n", (ulong)dev->rx_urb_size); ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to write BURST_CAP: %d\n", ret); ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read BURST_CAP: %d\n", ret); + netif_dbg(dev, ifup, dev->net, "Read Value from BURST_CAP after writing: 0x%08x\n", 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; - } + check_warn_return(ret, "Failed to write BULK_IN_DLY: %d\n", ret); ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read BULK_IN_DLY: %d\n", ret); + netif_dbg(dev, ifup, dev->net, "Read Value from BULK_IN_DLY after writing: 0x%08x\n", read_buf); ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read HW_CFG: %d\n", ret); + netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n", read_buf); @@ -889,97 +888,66 @@ static int smsc95xx_reset(struct usbnet *dev) read_buf |= NET_IP_ALIGN << 9; ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write HW_CFG register, ret=%d\n", - ret); - return ret; - } + check_warn_return(ret, "Failed to write HW_CFG: %d\n", ret); ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read HW_CFG: %d\n", ret); + netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing: 0x%08x\n", read_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); - return ret; - } + check_warn_return(ret, "Failed to write INT_STS: %d\n", ret); ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read ID_REV: %d\n", ret); netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf); /* Configure GPIO pins as LED outputs */ write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | LED_GPIO_CFG_FDX_LED; ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write LED_GPIO_CFG register, ret=%d\n", - ret); - return ret; - } + check_warn_return(ret, "Failed to write LED_GPIO_CFG: %d\n", ret); /* Init Tx */ ret = smsc95xx_write_reg(dev, FLOW, 0); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to write FLOW: %d\n", ret); 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; - } + check_warn_return(ret, "Failed to write AFC_CFG: %d\n", ret); /* Don't need mac_cr_lock during initialisation */ ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read MAC_CR: %d\n", ret); /* Init Rx */ /* Set Vlan */ 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; - } + check_warn_return(ret, "Failed to write VLAN1: %d\n", ret); /* Enable or disable checksum offload engines */ - smsc95xx_set_features(dev->net, dev->net->features); + ret = smsc95xx_set_features(dev->net, dev->net->features); + check_warn_return(ret, "Failed to set checksum offload features"); smsc95xx_set_multicast(dev->net); - if (smsc95xx_phy_initialize(dev) < 0) - return -EIO; + ret = smsc95xx_phy_initialize(dev); + check_warn_return(ret, "Failed to init PHY"); ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to read INT_EP_CTL: %d\n", ret); /* enable PHY interrupts */ read_buf |= INT_EP_CTL_PHY_INT_; ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); - if (ret < 0) { - netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); - return ret; - } + check_warn_return(ret, "Failed to write INT_EP_CTL: %d\n", ret); - smsc95xx_start_tx_path(dev); - smsc95xx_start_rx_path(dev); + ret = smsc95xx_start_tx_path(dev); + check_warn_return(ret, "Failed to start TX path"); + + ret = smsc95xx_start_rx_path(dev); + check_warn_return(ret, "Failed to start RX path"); netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); return 0; @@ -1006,10 +974,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); ret = usbnet_get_endpoints(dev, intf); - if (ret < 0) { - netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); - return ret; - } + check_warn_return(ret, "usbnet_get_endpoints failed: %d\n", ret); dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv), GFP_KERNEL);