ACPI: Add DMI check to disable power state check in power transition

Add the DMI check to disable power check in the course of device power
transistion.

http://bugzilla.kernel.org/show_bug.cgi?id=11000

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 91bdeb3..945cd2f 100644 (file)
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -48,6 +48,23 @@ EXPORT_SYMBOL(acpi_root_dir);
 
 #define STRUCT_TO_INT(s)       (*((int*)&s))
 
+static int set_power_nocheck(const struct dmi_system_id *id)
+{
+       printk(KERN_NOTICE PREFIX "%s detected - "
+               "disable power check in power transistion\n", id->ident);
+       acpi_power_nocheck = 1;
+       return 0;
+}
+static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = {
+       {
+       set_power_nocheck, "HP Pavilion 05", {
+       DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
+       DMI_MATCH(DMI_SYS_VENDOR, "HP Pavilion 05"),
+       DMI_MATCH(DMI_PRODUCT_VERSION, "2001211RE101GLEND") }, NULL},
+       {},
+};
+
+
 /* --------------------------------------------------------------------------
                                 Device Management
    -------------------------------------------------------------------------- */
@@ -830,7 +847,11 @@ static int __init acpi_init(void)
                }
        } else
                disable_acpi();
-
+       /*
+        * If the laptop falls into the DMI check table, the power state check
+        * will be disabled in the course of device power transistion.
+        */
+       dmi_check_system(power_nocheck_dmi_table);
        return result;
 }