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>
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@ -185,6 +185,12 @@ static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
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acpi_osi_setup("!Windows 2006");
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acpi_osi_setup("!Windows 2006");
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return 0;
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return 0;
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}
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}
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static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
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{
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printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
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acpi_osi_setup("!Windows 2009");
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return 0;
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}
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static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
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static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
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{
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{
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@ -211,6 +217,14 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
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DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"),
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},
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},
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},
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},
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{
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.callback = dmi_disable_osi_win7,
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.ident = "ASUS K50IJ",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
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},
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},
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/*
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/*
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* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
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* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
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