static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
{
int no_devices=0;
unsigned long flags;
/* must be called with skt_sem held */
spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
if (list_empty(&skt->devices_list))
no_devices=1;
spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
/* if no devices were added for this socket yet because of
* missing resource information or other trouble, we need to
* do this now. */
if (no_devices) {
int ret = pcmcia_card_add(skt);
if (ret)
return;
}
/* some device information might have changed because of a CIS
* update or because we can finally read it correctly... so
* determine it again, overwriting old values if necessary. */
bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
/* we re-scan all devices, not just the ones connected to this
* socket. This does not matter, though. */
bus_rescan_devices(&pcmcia_bus_type);
}
/*
* This workers main task is to wait for OP_OPR_ALIVE
* from TOP FW until ALIVE_MSG_TIMOUT timeout is elapsed.
* When OP_OPR_ALIVE received it will issue
* a call to "bus_rescan_devices".
*/
static void iwmct_rescan_worker(struct work_struct *ws)
{
struct iwmct_priv *priv;
int ret;
priv = container_of(ws, struct iwmct_priv, bus_rescan_worker);
LOG_INFO(priv, FW_MSG, "Calling bus_rescan\n");
ret = bus_rescan_devices(priv->func->dev.bus);
if (ret < 0)
LOG_INFO(priv, INIT, "bus_rescan_devices FAILED!!!\n");
}
/*
* test_bus_rescan
* make test call to bus_rescan_devices which
* will rescan the bus and attempt to match devices
* to drivers, will return 0 for no matches or
* the number of matches made, check that the
* value returned is not negative
*/
static int test_bus_rescan() {
int count = 0;
count = bus_rescan_devices(&test_bus_type);
if (count == 0)
printk("tbase: found no device/driver matches\n");
else if (count > 0)
printk("tbase; found match\n");
else {
printk("tbase: bus rescan failed\n");
return count;
}
return 0;
}
static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
if (!count)
return -EINVAL;
down(&p_dev->socket->skt_sem);
p_dev->allow_func_id_match = 1;
up(&p_dev->socket->skt_sem);
bus_rescan_devices(&pcmcia_bus_type);
return count;
}