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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-28 12:49:40 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-28 12:49:40 -0800 |
commit | 0191b625ca5a46206d2fb862bb08f36f2fcb3b31 (patch) | |
tree | 454d1842b1833d976da62abcbd5c47521ebe9bd7 /drivers/net/usb/pegasus.c | |
parent | 54a696bd07c14d3b1192d03ce7269bc59b45209a (diff) | |
parent | eb56092fc168bf5af199d47af50c0d84a96db898 (diff) | |
download | kernel_samsung_smdk4412-0191b625ca5a46206d2fb862bb08f36f2fcb3b31.zip kernel_samsung_smdk4412-0191b625ca5a46206d2fb862bb08f36f2fcb3b31.tar.gz kernel_samsung_smdk4412-0191b625ca5a46206d2fb862bb08f36f2fcb3b31.tar.bz2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1429 commits)
net: Allow dependancies of FDDI & Tokenring to be modular.
igb: Fix build warning when DCA is disabled.
net: Fix warning fallout from recent NAPI interface changes.
gro: Fix potential use after free
sfc: If AN is enabled, always read speed/duplex from the AN advertising bits
sfc: When disabling the NIC, close the device rather than unregistering it
sfc: SFT9001: Add cable diagnostics
sfc: Add support for multiple PHY self-tests
sfc: Merge top-level functions for self-tests
sfc: Clean up PHY mode management in loopback self-test
sfc: Fix unreliable link detection in some loopback modes
sfc: Generate unique names for per-NIC workqueues
802.3ad: use standard ethhdr instead of ad_header
802.3ad: generalize out mac address initializer
802.3ad: initialize ports LACPDU from const initializer
802.3ad: remove typedef around ad_system
802.3ad: turn ports is_individual into a bool
802.3ad: turn ports is_enabled into a bool
802.3ad: make ntt bool
ixgbe: Fix set_ringparam in ixgbe to use the same memory pools.
...
Fixed trivial IPv4/6 address printing conflicts in fs/cifs/connect.c due
to the conversion to %pI (in this networking merge) and the addition of
doing IPv6 addresses (from the earlier merge of CIFS).
Diffstat (limited to 'drivers/net/usb/pegasus.c')
-rw-r--r-- | drivers/net/usb/pegasus.c | 74 |
1 files changed, 46 insertions, 28 deletions
diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c index 7914867..166880c 100644 --- a/drivers/net/usb/pegasus.c +++ b/drivers/net/usb/pegasus.c @@ -99,11 +99,12 @@ static int update_eth_regs_async(pegasus_t *); static void ctrl_callback(struct urb *urb) { pegasus_t *pegasus = urb->context; + int status = urb->status; if (!pegasus) return; - switch (urb->status) { + switch (status) { case 0: if (pegasus->flags & ETH_REGS_CHANGE) { pegasus->flags &= ~ETH_REGS_CHANGE; @@ -119,7 +120,7 @@ static void ctrl_callback(struct urb *urb) default: if (netif_msg_drv(pegasus) && printk_ratelimit()) dev_dbg(&pegasus->intf->dev, "%s, status %d\n", - __func__, urb->status); + __func__, status); } pegasus->flags &= ~ETH_REGS_CHANGED; wake_up(&pegasus->ctrl_wait); @@ -611,6 +612,7 @@ static void read_bulk_callback(struct urb *urb) pegasus_t *pegasus = urb->context; struct net_device *net; int rx_status, count = urb->actual_length; + int status = urb->status; u8 *buf = urb->transfer_buffer; __u16 pkt_len; @@ -621,7 +623,7 @@ static void read_bulk_callback(struct urb *urb) if (!netif_device_present(net) || !netif_running(net)) return; - switch (urb->status) { + switch (status) { case 0: break; case -ETIME: @@ -639,11 +641,11 @@ static void read_bulk_callback(struct urb *urb) case -ECONNRESET: case -ESHUTDOWN: if (netif_msg_ifdown(pegasus)) - pr_debug("%s: rx unlink, %d\n", net->name, urb->status); + pr_debug("%s: rx unlink, %d\n", net->name, status); return; default: if (netif_msg_rx_err(pegasus)) - pr_debug("%s: RX status %d\n", net->name, urb->status); + pr_debug("%s: RX status %d\n", net->name, status); goto goon; } @@ -769,6 +771,7 @@ static void write_bulk_callback(struct urb *urb) { pegasus_t *pegasus = urb->context; struct net_device *net; + int status = urb->status; if (!pegasus) return; @@ -778,7 +781,7 @@ static void write_bulk_callback(struct urb *urb) if (!netif_device_present(net) || !netif_running(net)) return; - switch (urb->status) { + switch (status) { case -EPIPE: /* FIXME schedule_work() to clear the tx halt */ netif_stop_queue(net); @@ -790,11 +793,11 @@ static void write_bulk_callback(struct urb *urb) case -ECONNRESET: case -ESHUTDOWN: if (netif_msg_ifdown(pegasus)) - pr_debug("%s: tx unlink, %d\n", net->name, urb->status); + pr_debug("%s: tx unlink, %d\n", net->name, status); return; default: if (netif_msg_tx_err(pegasus)) - pr_info("%s: TX status %d\n", net->name, urb->status); + pr_info("%s: TX status %d\n", net->name, status); /* FALL THROUGH */ case 0: break; @@ -808,13 +811,13 @@ static void intr_callback(struct urb *urb) { pegasus_t *pegasus = urb->context; struct net_device *net; - int status; + int res, status = urb->status; if (!pegasus) return; net = pegasus->net; - switch (urb->status) { + switch (status) { case 0: break; case -ECONNRESET: /* unlink */ @@ -827,7 +830,7 @@ static void intr_callback(struct urb *urb) */ if (netif_msg_timer(pegasus)) pr_debug("%s: intr status %d\n", net->name, - urb->status); + status); } if (urb->actual_length >= 6) { @@ -854,12 +857,12 @@ static void intr_callback(struct urb *urb) pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; } - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status == -ENODEV) + res = usb_submit_urb(urb, GFP_ATOMIC); + if (res == -ENODEV) netif_device_detach(pegasus->net); - if (status && netif_msg_timer(pegasus)) + if (res && netif_msg_timer(pegasus)) printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n", - net->name, status); + net->name, res); } static void pegasus_tx_timeout(struct net_device *net) @@ -1213,7 +1216,7 @@ static void pegasus_set_multicast(struct net_device *net) pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; if (netif_msg_link(pegasus)) - pr_info("%s: set allmulti\n", net->name); + pr_debug("%s: set allmulti\n", net->name); } else { pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; @@ -1273,6 +1276,7 @@ static inline void setup_pegasus_II(pegasus_t * pegasus) } +static int pegasus_count; static struct workqueue_struct *pegasus_workqueue = NULL; #define CARRIER_CHECK_DELAY (2 * HZ) @@ -1301,6 +1305,18 @@ static int pegasus_blacklisted(struct usb_device *udev) return 0; } +/* we rely on probe() and remove() being serialized so we + * don't need extra locking on pegasus_count. + */ +static void pegasus_dec_workqueue(void) +{ + pegasus_count--; + if (pegasus_count == 0) { + destroy_workqueue(pegasus_workqueue); + pegasus_workqueue = NULL; + } +} + static int pegasus_probe(struct usb_interface *intf, const struct usb_device_id *id) { @@ -1309,14 +1325,18 @@ static int pegasus_probe(struct usb_interface *intf, pegasus_t *pegasus; int dev_index = id - pegasus_ids; int res = -ENOMEM; - DECLARE_MAC_BUF(mac); - usb_get_dev(dev); + if (pegasus_blacklisted(dev)) + return -ENODEV; - if (pegasus_blacklisted(dev)) { - res = -ENODEV; - goto out; + if (pegasus_count == 0) { + pegasus_workqueue = create_singlethread_workqueue("pegasus"); + if (!pegasus_workqueue) + return -ENOMEM; } + pegasus_count++; + + usb_get_dev(dev); net = alloc_etherdev(sizeof(struct pegasus)); if (!net) { @@ -1386,10 +1406,10 @@ static int pegasus_probe(struct usb_interface *intf, queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, CARRIER_CHECK_DELAY); - dev_info(&intf->dev, "%s, %s, %s\n", + dev_info(&intf->dev, "%s, %s, %pM\n", net->name, usb_dev_id[dev_index].name, - print_mac(mac, net->dev_addr)); + net->dev_addr); return 0; out3: @@ -1401,6 +1421,7 @@ out1: free_netdev(net); out: usb_put_dev(dev); + pegasus_dec_workqueue(); return res; } @@ -1426,6 +1447,7 @@ static void pegasus_disconnect(struct usb_interface *intf) pegasus->rx_skb = NULL; } free_netdev(pegasus->net); + pegasus_dec_workqueue(); } static int pegasus_suspend (struct usb_interface *intf, pm_message_t message) @@ -1469,7 +1491,7 @@ static struct usb_driver pegasus_driver = { .resume = pegasus_resume, }; -static void parse_id(char *id) +static void __init parse_id(char *id) { unsigned int vendor_id=0, device_id=0, flags=0, i=0; char *token, *name=NULL; @@ -1505,15 +1527,11 @@ static int __init pegasus_init(void) pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); if (devid) parse_id(devid); - pegasus_workqueue = create_singlethread_workqueue("pegasus"); - if (!pegasus_workqueue) - return -ENOMEM; return usb_register(&pegasus_driver); } static void __exit pegasus_exit(void) { - destroy_workqueue(pegasus_workqueue); usb_deregister(&pegasus_driver); } |