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Attach acpi_perf early. Especially when it is being used to provide info

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to other devices, it needs to be attached first.  (Multi-pass newbus
probes would be a better solution.)
This commit is contained in:
njl 2005-03-20 03:51:18 +00:00
parent d4af181c4d
commit f2b3c68800
1 changed files with 6 additions and 1 deletions
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7
sys/dev/acpica/acpi_perf.c
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@ -141,6 +141,7 @@ static void
acpi_perf_identify(driver_t *driver, device_t parent)
{
ACPI_HANDLE handle;
device_t dev;
/* Make sure we're not being doubly invoked. */
if (device_find_child(parent, "acpi_perf", -1) != NULL)
@ -156,8 +157,12 @@ acpi_perf_identify(driver_t *driver, device_t parent)
/*
* Add a child to every CPU that has the right methods. In future
* versions of the ACPI spec, CPUs can have different settings.
* We probe this child now so that other devices that depend
* on it (i.e., for info about supported states) will see it.
*/
if (BUS_ADD_CHILD(parent, 0, "acpi_perf", -1) == NULL)
if ((dev = BUS_ADD_CHILD(parent, 0, "acpi_perf", -1)) != NULL)
device_probe_and_attach(dev);
else
device_printf(parent, "add acpi_perf child failed\n");
}