diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2009-12-21 09:13:15 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-12-22 08:39:24 +0100 |
| commit | 81074e90f5c150ca70ab8dfcc77860cbe76f364d (patch) | |
| tree | 607fd815382a44b6876ebaa9840f644764175f39 /drivers/acpi/blacklist.c | |
| parent | Linux 2.6.32 (diff) | |
| download | linux-81074e90f5c150ca70ab8dfcc77860cbe76f364d.tar.xz linux-81074e90f5c150ca70ab8dfcc77860cbe76f364d.zip | |
ACPI: disable _OSI(Windows 2009) on Asus K50IJ
Fix a win7 compability issue on Asus K50IJ.
Here is the _BCM method of this laptop:
Method (_BCM, 1, NotSerialized)
{
If (LGreaterEqual (OSFG, OSVT))
{
If (LNotEqual (OSFG, OSW7))
{
Store (One, BCMD)
Store (GCBL (Arg0), Local0)
Subtract (0x0F, Local0, LBTN)
^^^SBRG.EC0.STBR ()
...
}
Else
{
DBGR (0x0B, Zero, Zero, Arg0)
Store (Arg0, LBTN)
^^^SBRG.EC0.STBR ()
...
}
}
}
LBTN is used to store the index of the brightness level in the _BCL.
GCBL is a method that convert the percentage value to the index value.
If _OSI(Windows 2009) is not disabled, LBTN is stored a percentage
value which is surely beyond the end of _BCL package.
http://bugzilla.kernel.org/show_bug.cgi?id=14753
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/blacklist.c')
| -rw-r--r-- | drivers/acpi/blacklist.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index 23e5a0519af5..2815df66f6f7 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -185,6 +185,12 @@ static int __init dmi_disable_osi_vista(const struct dmi_system_id *d) acpi_osi_setup("!Windows 2006"); return 0; } +static int __init dmi_disable_osi_win7(const struct dmi_system_id *d) +{ + printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); + acpi_osi_setup("!Windows 2009"); + return 0; +} static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { { @@ -211,6 +217,14 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"), }, }, + { + .callback = dmi_disable_osi_win7, + .ident = "ASUS K50IJ", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"), + }, + }, /* * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. |