struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev)
{
struct pnp_option *option;
if (!dev)
return NULL;
option = pnp_build_option(PNP_RES_PRIORITY_PREFERRED);
/* this should never happen but if it does we'll try to continue */
if (dev->independent)
pnp_err("independent resource already registered");
dev->independent = option;
return option;
}
static struct pnp_option *quirk_isapnp_mpu_options(struct pnp_dev *dev)
{
struct pnp_option *head = NULL;
struct pnp_option *prev = NULL;
struct pnp_option *res;
/*
* Build a functional IRQ-less variant of each MPU option.
*/
for (res = dev->dependent; res; res = res->next) {
struct pnp_option *curr;
struct pnp_port *port;
struct pnp_port *copy;
port = res->port;
if (!port || !res->irq)
continue;
copy = pnp_alloc(sizeof *copy);
if (!copy)
break;
copy->min = port->min;
copy->max = port->max;
copy->align = port->align;
copy->size = port->size;
copy->flags = port->flags;
curr = pnp_build_option(PNP_RES_PRIORITY_FUNCTIONAL);
if (!curr) {
kfree(copy);
break;
}
curr->port = copy;
if (prev)
prev->next = curr;
else
head = curr;
prev = curr;
}
if (head)
dev_info(&dev->dev, "adding IRQ-less MPU options\n");
return head;
}
struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority)
{
struct pnp_option *option;
if (!dev)
return NULL;
option = pnp_build_option(priority);
if (dev->dependent) {
struct pnp_option *parent = dev->dependent;
while (parent->next)
parent = parent->next;
parent->next = option;
} else
dev->dependent = option;
return option;
}