From cc3b4866bee996c922e875b8c8efe9f0d8803aae Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Mon, 14 Nov 2005 21:23:14 +0100 Subject: [PATCH] pcmcia: unify detach, REMOVAL_EVENT handlers into one remove callback Unify the "detach" and REMOVAL_EVENT handlers to one "remove" function. Old functionality is preserved, for the moment. Signed-off-by: Dominik Brodowski --- drivers/pcmcia/ds.c | 97 ++++++++++++++++++++++++++++++++++------------------- 1 file changed, 62 insertions(+), 35 deletions(-) (limited to 'drivers/pcmcia') diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index 5223395..32b4d6b 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -57,8 +57,6 @@ module_param_named(pc_debug, ds_pc_debug, int, 0644); spinlock_t pcmcia_dev_list_lock; -static int unbind_request(struct pcmcia_socket *s); - /*====================================================================*/ /* code which was in cs.c before */ @@ -205,7 +203,7 @@ static void pcmcia_check_driver(struct pcmcia_driver *p_drv) unsigned int i; u32 hash; - if (!p_drv->attach || !p_drv->event || !p_drv->detach) + if (!p_drv->attach || !p_drv->event || !p_drv->remove) printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " "function\n", p_drv->drv.name); @@ -399,13 +397,42 @@ static int pcmcia_device_remove(struct device * dev) { struct pcmcia_device *p_dev; struct pcmcia_driver *p_drv; + int i; /* detach the "instance" */ p_dev = to_pcmcia_dev(dev); p_drv = to_pcmcia_drv(dev->driver); + /* the likely, new path */ + if (p_drv && p_drv->remove) { + p_drv->remove(p_dev); + + /* check for proper unloading */ + if (p_dev->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED)) + printk(KERN_INFO "pcmcia: driver %s did not release config properly\n", + p_drv->drv.name); + + for (i = 0; i < MAX_WIN; i++) + if (p_dev->state & CLIENT_WIN_REQ(i)) + printk(KERN_INFO "pcmcia: driver %s did not release windows properly\n", + p_drv->drv.name); + + /* undo pcmcia_register_client */ + p_dev->state = CLIENT_UNBOUND; + pcmcia_put_dev(p_dev); + + /* references from pcmcia_probe_device */ + pcmcia_put_dev(p_dev); + module_put(p_drv->owner); + + return 0; + } + + /* old path */ if (p_drv) { if ((p_drv->detach) && (p_dev->instance)) { + printk(KERN_INFO "pcmcia: using deprecated detach mechanism. Fix the driver!\n"); + p_drv->detach(p_dev->instance); /* from pcmcia_probe_device */ put_device(&p_dev->dev); @@ -417,6 +444,36 @@ static int pcmcia_device_remove(struct device * dev) } +/* + * Removes a PCMCIA card from the device tree and socket list. + */ +static void pcmcia_card_remove(struct pcmcia_socket *s) +{ + struct pcmcia_device *p_dev; + unsigned long flags; + + ds_dbg(2, "unbind_request(%d)\n", s->sock); + + s->device_count = 0; + + for (;;) { + /* unregister all pcmcia_devices registered with this socket*/ + spin_lock_irqsave(&pcmcia_dev_list_lock, flags); + if (list_empty(&s->devices_list)) { + spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + return; + } + p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list); + list_del(&p_dev->socket_device_list); + p_dev->state |= CLIENT_STALE; + spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + + device_unregister(&p_dev->dev); + } + + return; +} /* unbind_request */ + /* * pcmcia_device_query -- determine information about a pcmcia device @@ -1059,8 +1116,8 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) case CS_EVENT_CARD_REMOVAL: s->pcmcia_state.present = 0; - send_event(skt, event, priority); - unbind_request(skt); + send_event(skt, event, priority); + pcmcia_card_remove(skt); handle_event(skt, event); break; @@ -1177,36 +1234,6 @@ int pcmcia_register_client(struct pcmcia_device **handle, client_reg_t *req) EXPORT_SYMBOL(pcmcia_register_client); -/* unbind _all_ devices attached to a given pcmcia_bus_socket. The - * drivers have been called with EVENT_CARD_REMOVAL before. - */ -static int unbind_request(struct pcmcia_socket *s) -{ - struct pcmcia_device *p_dev; - unsigned long flags; - - ds_dbg(2, "unbind_request(%d)\n", s->sock); - - s->device_count = 0; - - for (;;) { - /* unregister all pcmcia_devices registered with this socket*/ - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); - if (list_empty(&s->devices_list)) { - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - return 0; - } - p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list); - list_del(&p_dev->socket_device_list); - p_dev->state |= CLIENT_STALE; - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - - device_unregister(&p_dev->dev); - } - - return 0; -} /* unbind_request */ - int pcmcia_deregister_client(struct pcmcia_device *p_dev) { struct pcmcia_socket *s; -- cgit v1.1