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author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-10-25 22:55:14 +0100 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-10-25 22:55:14 +0100 |
commit | e3ed766b4958bf7889539f09aec3f6a72d2c4dd2 (patch) | |
tree | d6242edddfb436bff21894308d9280933e762433 /drivers/acpi/scan.c | |
parent | 343ccb040e60c3688d4413e839975fc3c8f9e287 (diff) | |
parent | 3722ed2380ad6e89eaf81fcf93f06d605e740435 (diff) | |
download | linux-e3ed766b4958bf7889539f09aec3f6a72d2c4dd2.tar.gz linux-e3ed766b4958bf7889539f09aec3f6a72d2c4dd2.tar.bz2 linux-e3ed766b4958bf7889539f09aec3f6a72d2c4dd2.zip |
Merge branch 'acpi-init'
* acpi-init:
clocksource: cosmetic: Drop OF 'dependency' from symbols
clocksource / arm_arch_timer: Convert to ACPI probing
clocksource: Add new CLKSRC_{PROBE,ACPI} config symbols
clocksource / ACPI: Add probing infrastructure for ACPI-based clocksources
irqchip / GIC: Convert the GIC driver to ACPI probing
irqchip / ACPI: Add probing infrastructure for ACPI-based irqchips
ACPI: Add early device probing infrastructure
Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r-- | drivers/acpi/scan.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index f834b8c6d8d1..daf9fc8329e6 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1913,3 +1913,42 @@ int __init acpi_scan_init(void) mutex_unlock(&acpi_scan_lock); return result; } + +static struct acpi_probe_entry *ape; +static int acpi_probe_count; +static DEFINE_SPINLOCK(acpi_probe_lock); + +static int __init acpi_match_madt(struct acpi_subtable_header *header, + const unsigned long end) +{ + if (!ape->subtable_valid || ape->subtable_valid(header, ape)) + if (!ape->probe_subtbl(header, end)) + acpi_probe_count++; + + return 0; +} + +int __init __acpi_probe_device_table(struct acpi_probe_entry *ap_head, int nr) +{ + int count = 0; + + if (acpi_disabled) + return 0; + + spin_lock(&acpi_probe_lock); + for (ape = ap_head; nr; ape++, nr--) { + if (ACPI_COMPARE_NAME(ACPI_SIG_MADT, ape->id)) { + acpi_probe_count = 0; + acpi_table_parse_madt(ape->type, acpi_match_madt, 0); + count += acpi_probe_count; + } else { + int res; + res = acpi_table_parse(ape->id, ape->probe_table); + if (!res) + count++; + } + } + spin_unlock(&acpi_probe_lock); + + return count; +} |