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Differential D4544 Diff 12000 sys/dev/acpica/acpi_hpet.c

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sys/dev/acpica/acpi_hpet.c

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/* /*
* Find an existing IRQ resource that matches the requested IRQ range * Find an existing IRQ resource that matches the requested IRQ range
* and return its RID. If one is not found, use a new RID. * and return its RID. If one is not found, use a new RID.
*/ */
static int static int
hpet_find_irq_rid(device_t dev, u_long start, u_long end) hpet_find_irq_rid(device_t dev, u_long start, u_long end)
{ {
u_long irq; rman_res_t irq;
int error, rid; int error, rid;
for (rid = 0;; rid++) { for (rid = 0;; rid++) {
error = bus_get_resource(dev, SYS_RES_IRQ, rid, &irq, NULL); error = bus_get_resource(dev, SYS_RES_IRQ, rid, &irq, NULL);
if (error != 0 || (start <= irq && irq <= end)) if (error != 0 || (start <= irq && irq <= end))
return (rid); return (rid);
} }
} }
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sc->mem_rid = 0; sc->mem_rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
RF_ACTIVE); RF_ACTIVE);
if (sc->mem_res == NULL) if (sc->mem_res == NULL)
return (ENOMEM); return (ENOMEM);
/* Validate that we can access the whole region. */ /* Validate that we can access the whole region. */
if (rman_get_size(sc->mem_res) < HPET_MEM_WIDTH) { if (rman_get_size(sc->mem_res) < HPET_MEM_WIDTH) {
device_printf(dev, "memory region width %ld too small\n", device_printf(dev, "memory region width %jd too small\n",
rman_get_size(sc->mem_res)); rman_get_size(sc->mem_res));
bus_free_resource(dev, SYS_RES_MEMORY, sc->mem_res); bus_free_resource(dev, SYS_RES_MEMORY, sc->mem_res);
return (ENXIO); return (ENXIO);
} }
/* Be sure timer is enabled. */ /* Be sure timer is enabled. */
hpet_enable(sc); hpet_enable(sc);
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