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Diffstat (limited to 'drivers/net/usb/pegasus.c')
-rw-r--r--drivers/net/usb/pegasus.c138
1 files changed, 77 insertions, 61 deletions
diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c
index 9a907182569c..f18b03be1b87 100644
--- a/drivers/net/usb/pegasus.c
+++ b/drivers/net/usb/pegasus.c
@@ -1,31 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 1999-2013 Petko Manolov (petkan@nucleusys.com)
+ * Copyright (c) 1999-2021 Petko Manolov (petkan@nucleusys.com)
*
- * ChangeLog:
- * .... Most of the time spent on reading sources & docs.
- * v0.2.x First official release for the Linux kernel.
- * v0.3.0 Beutified and structured, some bugs fixed.
- * v0.3.x URBifying bulk requests and bugfixing. First relatively
- * stable release. Still can touch device's registers only
- * from top-halves.
- * v0.4.0 Control messages remained unurbified are now URBs.
- * Now we can touch the HW at any time.
- * v0.4.9 Control urbs again use process context to wait. Argh...
- * Some long standing bugs (enable_net_traffic) fixed.
- * Also nasty trick about resubmiting control urb from
- * interrupt context used. Please let me know how it
- * behaves. Pegasus II support added since this version.
- * TODO: suppressing HCD warnings spewage on disconnect.
- * v0.4.13 Ethernet address is now set at probe(), not at open()
- * time as this seems to break dhcpd.
- * v0.5.0 branch to 2.5.x kernels
- * v0.5.1 ethtool support added
- * v0.5.5 rx socket buffers are in a pool and the their allocation
- * is out of the interrupt routine.
- * ...
- * v0.9.3 simplified [get|set]_register(s), async update registers
- * logic revisited, receive skb_pool removed.
*/
#include <linux/sched.h>
@@ -45,7 +21,6 @@
/*
* Version Information
*/
-#define DRIVER_VERSION "v0.9.3 (2013/04/25)"
#define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
@@ -132,9 +107,15 @@ static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
const void *data)
{
- return usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REGS,
+ int ret;
+
+ ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REGS,
PEGASUS_REQT_WRITE, 0, indx, data, size,
1000, GFP_NOIO);
+ if (ret < 0)
+ netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret);
+
+ return ret;
}
/*
@@ -145,10 +126,15 @@ static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
{
void *buf = &data;
+ int ret;
- return usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REG,
+ ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REG,
PEGASUS_REQT_WRITE, data, indx, buf, 1,
1000, GFP_NOIO);
+ if (ret < 0)
+ netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret);
+
+ return ret;
}
static int update_eth_regs_async(pegasus_t *pegasus)
@@ -188,10 +174,9 @@ static int update_eth_regs_async(pegasus_t *pegasus)
static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
{
- int i;
- __u8 data[4] = { phy, 0, 0, indx };
+ int i, ret;
__le16 regdi;
- int ret = -ETIMEDOUT;
+ __u8 data[4] = { phy, 0, 0, indx };
if (cmd & PHY_WRITE) {
__le16 *t = (__le16 *) & data[1];
@@ -207,12 +192,15 @@ static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
if (data[0] & PHY_DONE)
break;
}
- if (i >= REG_TIMEOUT)
+ if (i >= REG_TIMEOUT) {
+ ret = -ETIMEDOUT;
goto fail;
+ }
if (cmd & PHY_READ) {
ret = get_registers(p, PhyData, 2, &regdi);
+ if (ret < 0)
+ goto fail;
*regd = le16_to_cpu(regdi);
- return ret;
}
return 0;
fail:
@@ -235,9 +223,13 @@ static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
static int mdio_read(struct net_device *dev, int phy_id, int loc)
{
pegasus_t *pegasus = netdev_priv(dev);
+ int ret;
u16 res;
- read_mii_word(pegasus, phy_id, loc, &res);
+ ret = read_mii_word(pegasus, phy_id, loc, &res);
+ if (ret < 0)
+ return ret;
+
return (int)res;
}
@@ -251,10 +243,9 @@ static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
{
- int i;
- __u8 tmp = 0;
+ int ret, i;
__le16 retdatai;
- int ret;
+ __u8 tmp = 0;
set_register(pegasus, EpromCtrl, 0);
set_register(pegasus, EpromOffset, index);
@@ -262,21 +253,25 @@ static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
for (i = 0; i < REG_TIMEOUT; i++) {
ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
+ if (ret < 0)
+ goto fail;
if (tmp & EPROM_DONE)
break;
- if (ret == -ESHUTDOWN)
- goto fail;
}
- if (i >= REG_TIMEOUT)
+ if (i >= REG_TIMEOUT) {
+ ret = -ETIMEDOUT;
goto fail;
+ }
ret = get_registers(pegasus, EpromData, 2, &retdatai);
+ if (ret < 0)
+ goto fail;
*retdata = le16_to_cpu(retdatai);
return ret;
fail:
- netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
- return -ETIMEDOUT;
+ netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
+ return ret;
}
#ifdef PEGASUS_WRITE_EEPROM
@@ -324,10 +319,10 @@ static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
return ret;
fail:
- netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
+ netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
return -ETIMEDOUT;
}
-#endif /* PEGASUS_WRITE_EEPROM */
+#endif /* PEGASUS_WRITE_EEPROM */
static inline int get_node_id(pegasus_t *pegasus, u8 *id)
{
@@ -367,19 +362,21 @@ static void set_ethernet_addr(pegasus_t *pegasus)
return;
err:
eth_hw_addr_random(pegasus->net);
- dev_info(&pegasus->intf->dev, "software assigned MAC address.\n");
+ netif_dbg(pegasus, drv, pegasus->net, "software assigned MAC address.\n");
return;
}
static inline int reset_mac(pegasus_t *pegasus)
{
+ int ret, i;
__u8 data = 0x8;
- int i;
set_register(pegasus, EthCtrl1, data);
for (i = 0; i < REG_TIMEOUT; i++) {
- get_registers(pegasus, EthCtrl1, 1, &data);
+ ret = get_registers(pegasus, EthCtrl1, 1, &data);
+ if (ret < 0)
+ goto fail;
if (~data & 0x08) {
if (loopback)
break;
@@ -402,22 +399,29 @@ static inline int reset_mac(pegasus_t *pegasus)
}
if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
__u16 auxmode;
- read_mii_word(pegasus, 3, 0x1b, &auxmode);
+ ret = read_mii_word(pegasus, 3, 0x1b, &auxmode);
+ if (ret < 0)
+ goto fail;
auxmode |= 4;
write_mii_word(pegasus, 3, 0x1b, &auxmode);
}
return 0;
+fail:
+ netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
+ return ret;
}
static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
{
- __u16 linkpart;
- __u8 data[4];
pegasus_t *pegasus = netdev_priv(dev);
int ret;
+ __u16 linkpart;
+ __u8 data[4];
- read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
+ ret = read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
+ if (ret < 0)
+ goto fail;
data[0] = 0xc8; /* TX & RX enable, append status, no CRC */
data[1] = 0;
if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
@@ -435,11 +439,16 @@ static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
u16 auxmode;
- read_mii_word(pegasus, 0, 0x1b, &auxmode);
+ ret = read_mii_word(pegasus, 0, 0x1b, &auxmode);
+ if (ret < 0)
+ goto fail;
auxmode |= 4;
write_mii_word(pegasus, 0, 0x1b, &auxmode);
}
+ return 0;
+fail:
+ netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
return ret;
}
@@ -447,9 +456,9 @@ static void read_bulk_callback(struct urb *urb)
{
pegasus_t *pegasus = urb->context;
struct net_device *net;
+ u8 *buf = urb->transfer_buffer;
int rx_status, count = urb->actual_length;
int status = urb->status;
- u8 *buf = urb->transfer_buffer;
__u16 pkt_len;
if (!pegasus)
@@ -880,7 +889,6 @@ static void pegasus_get_drvinfo(struct net_device *dev,
pegasus_t *pegasus = netdev_priv(dev);
strlcpy(info->driver, driver_name, sizeof(info->driver));
- strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
}
@@ -998,8 +1006,7 @@ static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
data[0] = pegasus->phy;
fallthrough;
case SIOCDEVPRIVATE + 1:
- read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
- res = 0;
+ res = read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
break;
case SIOCDEVPRIVATE + 2:
if (!capable(CAP_NET_ADMIN))
@@ -1033,22 +1040,25 @@ static void pegasus_set_multicast(struct net_device *net)
static __u8 mii_phy_probe(pegasus_t *pegasus)
{
- int i;
+ int i, ret;
__u16 tmp;
for (i = 0; i < 32; i++) {
- read_mii_word(pegasus, i, MII_BMSR, &tmp);
+ ret = read_mii_word(pegasus, i, MII_BMSR, &tmp);
+ if (ret < 0)
+ goto fail;
if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
continue;
else
return i;
}
-
+fail:
return 0xff;
}
static inline void setup_pegasus_II(pegasus_t *pegasus)
{
+ int ret;
__u8 data = 0xa5;
set_register(pegasus, Reg1d, 0);
@@ -1060,7 +1070,9 @@ static inline void setup_pegasus_II(pegasus_t *pegasus)
set_register(pegasus, Reg7b, 2);
set_register(pegasus, 0x83, data);
- get_registers(pegasus, 0x83, 1, &data);
+ ret = get_registers(pegasus, 0x83, 1, &data);
+ if (ret < 0)
+ goto fail;
if (data == 0xa5)
pegasus->chip = 0x8513;
@@ -1075,6 +1087,10 @@ static inline void setup_pegasus_II(pegasus_t *pegasus)
set_register(pegasus, Reg81, 6);
else
set_register(pegasus, Reg81, 2);
+
+ return;
+fail:
+ netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
}
static void check_carrier(struct work_struct *work)
@@ -1296,7 +1312,7 @@ static void __init parse_id(char *id)
static int __init pegasus_init(void)
{
- pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
+ pr_info("%s: " DRIVER_DESC "\n", driver_name);
if (devid)
parse_id(devid);
return usb_register(&pegasus_driver);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-27 11:39:51 +0300