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amdsmn(4): Do not probe not matching hostbridges

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Similar to r323195, but for amdsmn(4) driver (which borrowed some design).

Ignore hostbs that do not match our PCI device id criteria.

Sponsored by:	Dell EMC Isilon
This commit is contained in:
Conrad Meyer 2017-09-05 21:00:33 +00:00
parent 40f7bccb5d
commit 1b93938ae4
1 changed files with 16 additions and 9 deletions
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25
sys/dev/amdsmn/amdsmn.c
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@ -90,23 +90,28 @@ static devclass_t amdsmn_devclass;
DRIVER_MODULE(amdsmn, hostb, amdsmn_driver, amdsmn_devclass, NULL, NULL);
MODULE_VERSION(amdsmn, 1);
static void
amdsmn_identify(driver_t *driver, device_t parent)
static bool
amdsmn_match(device_t parent)
{
device_t child;
uint32_t devid;
size_t i;
/* Make sure we're not being doubly invoked. */
if (device_find_child(parent, "amdsmn", -1) != NULL)
return;
devid = pci_get_devid(parent);
for (i = 0; i < nitems(amdsmn_ids); i++)
if (amdsmn_ids[i].device_id == devid)
break;
return (true);
return (false);
}
if (i >= nitems(amdsmn_ids))
static void
amdsmn_identify(driver_t *driver, device_t parent)
{
device_t child;
/* Make sure we're not being doubly invoked. */
if (device_find_child(parent, "amdsmn", -1) != NULL)
return;
if (!amdsmn_match(parent))
return;
child = device_add_child(parent, "amdsmn", -1);
@ -121,6 +126,8 @@ amdsmn_probe(device_t dev)
if (resource_disabled("amdsmn", 0))
return (ENXIO);
if (!amdsmn_match(device_get_parent(dev)))
return (ENXIO);
family = CPUID_TO_FAMILY(cpu_id);