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authorZhang Rui <rui.zhang@intel.com>2010-10-26 06:06:54 +0400
committerLen Brown <len.brown@intel.com>2010-10-26 12:55:29 +0400
commitb1d248d96c71665c79befb81207f38f894c7c082 (patch)
treeeab81c2786ace3ee0121cd8a0a18c53e7c940bd0 /drivers/acpi/bus.c
parentaf48931c4863ced64cc52c58757be6e254437f9a (diff)
downloadlinux-b1d248d96c71665c79befb81207f38f894c7c082.tar.xz
ACPI: install ACPI table handler before any dynamic tables being loaded
ACPI table sysfs I/F is broken by commit 78f1699659963fff97975df44db6d5dbe7218e55 Author: Alex Chiang <achiang@hp.com> Date: Sun Dec 20 12:19:09 2009 -0700 ACPI: processor: call _PDC early because dynamic SSDT tables may be loaded in _PDC, before installing the ACPI table handler. As a result, the sysfs I/F of these dynamic tables are located at /sys/firmware/acpi/tables instead of /sys/firmware/acpi/tables/dynamic, which is not true. Invoke acpi_sysfs_init() before acpi_early_processor_set_pdc(), so that the table handler is installed before any dynamic tables loaded. https://bugzilla.kernel.org/show_bug.cgi?id=21142 CC: Dennis Jansen <dennis.jansen@web.de> CC: Alex Chiang <achiang@hp.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/bus.c')
-rw-r--r--drivers/acpi/bus.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 310e3b9749cb..d68bd61072bb 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -935,6 +935,12 @@ static int __init acpi_bus_init(void)
goto error1;
}
+ /*
+ * _PDC control method may load dynamic SSDT tables,
+ * and we need to install the table handler before that.
+ */
+ acpi_sysfs_init();
+
acpi_early_processor_set_pdc();
/*
@@ -1026,7 +1032,6 @@ static int __init acpi_init(void)
acpi_scan_init();
acpi_ec_init();
acpi_power_init();
- acpi_sysfs_init();
acpi_debugfs_init();
acpi_sleep_proc_init();
acpi_wakeup_device_init();