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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-10-25 22:55:14 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-10-25 22:55:14 +0100
commite3ed766b4958bf7889539f09aec3f6a72d2c4dd2 (patch)
treed6242edddfb436bff21894308d9280933e762433 /drivers/acpi/scan.c
parentMerge branches 'acpi-scan', 'acpi-tables', 'acpi-ec' and 'acpi-assorted' (diff)
parentclocksource: cosmetic: Drop OF 'dependency' from symbols (diff)
downloadlinux-e3ed766b4958bf7889539f09aec3f6a72d2c4dd2.tar.xz
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.c39
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;
+}