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authorLan Tianyu <tianyu.lan@intel.com>2013-06-05 04:27:50 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-06-27 21:35:37 +0200
commit2fa97feb4406c546b52e35b6b6c50cb8f63425d2 (patch)
tree48dbba1a1f9e6e7e9035030e605bdeb410df0d2f /drivers/acpi/scan.c
parentACPI: Remove unused flags in acpi_device_flags (diff)
downloadlinux-2fa97feb4406c546b52e35b6b6c50cb8f63425d2.tar.xz
linux-2fa97feb4406c546b52e35b6b6c50cb8f63425d2.zip
ACPI: Add CMOS RTC Operation Region handler support
On HP Folio 13-2000, the BIOS defines a CMOS RTC Operation Region and the EC's _REG methord accesses that region. Thus an appropriate address space handler must be registered for that region before the EC driver is loaded. Introduce a mechanism for adding CMOS RTC address space handlers. Register an ACPI scan handler for CMOS RTC devices such that, when a device of that kind is detected during an ACPI namespace scan, a common CMOS RTC operation region address space handler will be installed for it. References: https://bugzilla.kernel.org/show_bug.cgi?id=54621 Reported-and-tested-by: Stefan Nagy <public@stefan-nagy.at> Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Cc: 3.9+ <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to '')
-rw-r--r--drivers/acpi/scan.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index b14ac46948c9..a514be216440 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -2040,6 +2040,7 @@ int __init acpi_scan_init(void)
acpi_pci_link_init();
acpi_platform_init();
acpi_lpss_init();
+ acpi_cmos_rtc_init();
acpi_container_init();
acpi_memory_hotplug_init();