[PATCH] ACPI / blacklist: blacklist Win8 OSI for HP Pavilion dv6

[Alex Hung]

The brightness hotkeys of HP Pavilion dv6 does not work with Win8 OSI. Due
to insufficient documentation for the driver implementation, blacklist
it as a workaround.

Signed-off-by: Alex Hung <alex.hung at canonical.com>
---
 drivers/acpi/blacklist.c |   13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 1a00d17..6f4f63e 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -363,7 +363,6 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 		    DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"),
 		},
 	},
-
 	/*
 	 * The following Lenovo models have a broken workaround in the
 	 * acpi_video backlight implementation to meet the Windows 8
@@ -442,6 +441,18 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5537"),
 		},
 	},
+	/*
+	 * The brightness hotkeys do not work on those machines when
+	 * returning true for _OSI("Windows 2012")
+	 */
+	{
+	.callback = dmi_disable_osi_win8,
+	.ident = "HP Pavilion dv6",
+	.matches = {
+		    DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		    DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6 Notebook PC"),
+		},
+	},
 
 	/*
 	 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
-- 
1.7.9.5