From fd238232cd0ff4840ae6946bb338502154096d88 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Sun, 5 Mar 2006 10:45:09 +0100 Subject: [PATCH] pcmcia: embed dev_link_t into struct pcmcia_device Embed dev_link_t into struct pcmcia_device(), as they basically address the same entity. The actual contents of dev_link_t will be cleaned up step by step. This patch includes a bugfix from and signed-off-by Andrew Morton. Signed-off-by: Dominik Brodowski --- drivers/net/wireless/ray_cs.c | 98 +++++++++++++++---------------------------- 1 file changed, 33 insertions(+), 65 deletions(-) (limited to 'drivers/net/wireless/ray_cs.c') diff --git a/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c index 7d95587d09d..60297460deb 100644 --- a/drivers/net/wireless/ray_cs.c +++ b/drivers/net/wireless/ray_cs.c @@ -190,12 +190,6 @@ static int bc; static char *phy_addr = NULL; -/* A linked list of "instances" of the ray device. Each actual - PCMCIA card corresponds to one device instance, and is described - by one dev_link_t structure (defined in ds.h). -*/ -static dev_link_t *dev_list = NULL; - /* A dev_link_t structure has fields for most things that are needed to keep track of a socket, but there will usually be some device specific information that also needs to be kept track of. The @@ -204,6 +198,9 @@ static dev_link_t *dev_list = NULL; */ static unsigned int ray_mem_speed = 500; +/* WARNING: THIS DRIVER IS NOT CAPABLE OF HANDLING MULTIPLE DEVICES! */ +static struct pcmcia_device *this_device = NULL; + MODULE_AUTHOR("Corey Thomas "); MODULE_DESCRIPTION("Raylink/WebGear wireless LAN driver"); MODULE_LICENSE("GPL"); @@ -308,53 +305,44 @@ static char rcsid[] = "Raylink/WebGear wireless LAN - Corey priv; - - memset(link, 0, sizeof(struct dev_link_t)); + local->finder = p_dev; /* The io structure describes IO port mapping. None used here */ - link->io.NumPorts1 = 0; - link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; - link->io.IOAddrLines = 5; + p_dev->io.NumPorts1 = 0; + p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; + p_dev->io.IOAddrLines = 5; /* Interrupt setup. For PCMCIA, driver takes what's given */ - link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; - link->irq.IRQInfo1 = IRQ_LEVEL_ID; - link->irq.Handler = &ray_interrupt; + p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; + p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID; + p_dev->irq.Handler = &ray_interrupt; /* General socket configuration */ - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 1; - link->conf.Present = PRESENT_OPTION; + p_dev->conf.Attributes = CONF_ENABLE_IRQ; + p_dev->conf.IntType = INT_MEMORY_AND_IO; + p_dev->conf.ConfigIndex = 1; + p_dev->conf.Present = PRESENT_OPTION; - link->priv = dev; - link->irq.Instance = dev; + p_dev->priv = dev; + p_dev->irq.Instance = dev; - local->finder = link; + local->finder = p_dev; local->card_status = CARD_INSERTED; local->authentication_state = UNAUTHENTICATED; local->num_multi = 0; - DEBUG(2,"ray_attach link = %p, dev = %p, local = %p, intr = %p\n", - link,dev,local,&ray_interrupt); + DEBUG(2,"ray_attach p_dev = %p, dev = %p, local = %p, intr = %p\n", + p_dev,dev,local,&ray_interrupt); /* Raylink entries in the device structure */ dev->hard_start_xmit = &ray_dev_start_xmit; @@ -378,16 +366,13 @@ static int ray_attach(struct pcmcia_device *p_dev) init_timer(&local->timer); - link->handle = p_dev; - p_dev->instance = link; - - link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; - ray_config(link); + p_dev->state |= DEV_PRESENT | DEV_CONFIG_PENDING; + this_device = p_dev; + ray_config(p_dev); return 0; fail_alloc_dev: - kfree(link); return -ENOMEM; } /* ray_attach */ /*============================================================================= @@ -399,18 +384,12 @@ fail_alloc_dev: static void ray_detach(struct pcmcia_device *p_dev) { dev_link_t *link = dev_to_instance(p_dev); - dev_link_t **linkp; struct net_device *dev; ray_dev_t *local; DEBUG(1, "ray_detach(0x%p)\n", link); - - /* Locate device structure */ - for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) - if (*linkp == link) break; - if (*linkp == NULL) - return; + this_device = NULL; dev = link->priv; if (link->state & DEV_CONFIG) { @@ -420,13 +399,10 @@ static void ray_detach(struct pcmcia_device *p_dev) del_timer(&local->timer); } - /* Unlink device structure, free pieces */ - *linkp = link->next; if (link->priv) { - if (link->dev) unregister_netdev(dev); + if (link->dev_node) unregister_netdev(dev); free_netdev(dev); } - kfree(link); DEBUG(2,"ray_cs ray_detach ending\n"); } /* ray_detach */ /*============================================================================= @@ -537,7 +513,7 @@ static void ray_config(dev_link_t *link) } strcpy(local->node.dev_name, dev->name); - link->dev = &local->node; + link->dev_node = &local->node; link->state &= ~DEV_CONFIG_PENDING; printk(KERN_INFO "%s: RayLink, irq %d, hw_addr ", @@ -1640,18 +1616,14 @@ static const struct iw_handler_def ray_handler_def = /*===========================================================================*/ static int ray_open(struct net_device *dev) { - dev_link_t *link; ray_dev_t *local = (ray_dev_t *)dev->priv; + dev_link_t *link; + link = local->finder; DEBUG(1, "ray_open('%s')\n", dev->name); - for (link = dev_list; link; link = link->next) - if (link->priv == dev) break; - if (!DEV_OK(link)) { - return -ENODEV; - } - - if (link->open == 0) local->num_multi = 0; + if (link->open == 0) + local->num_multi = 0; link->open++; /* If the card is not started, time to start it ! - Jean II */ @@ -1678,15 +1650,12 @@ static int ray_open(struct net_device *dev) /*===========================================================================*/ static int ray_dev_close(struct net_device *dev) { + ray_dev_t *local = (ray_dev_t *)dev->priv; dev_link_t *link; + link = local->finder; DEBUG(1, "ray_dev_close('%s')\n", dev->name); - for (link = dev_list; link; link = link->next) - if (link->priv == dev) break; - if (link == NULL) - return -ENODEV; - link->open--; netif_stop_queue(dev); @@ -2679,7 +2648,7 @@ static int ray_cs_proc_read(char *buf, char **start, off_t offset, int len) struct freq_hop_element *pfh; UCHAR c[33]; - link = dev_list; + link = this_device; if (!link) return 0; dev = (struct net_device *)link->priv; @@ -2923,7 +2892,6 @@ static void __exit exit_ray_cs(void) #endif pcmcia_unregister_driver(&ray_driver); - BUG_ON(dev_list != NULL); } /* exit_ray_cs */ module_init(init_ray_cs); -- cgit v1.2.3