ACPI: video: DMI workaround broken Acer 7720 BIOS enabling display brightness

http://bugzilla.kernel.org/show_bug.cgi?id=13121

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 1bdfb37377e32d58bcd1f3e35e858c1cc681aa5c..1eff1625672a151969adcb79d83fa255c3473f60 100644 (file)
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -586,6 +586,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
                DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
                },
        },
+       {
+        .callback = video_set_bqc_offset,
+        .ident = "Acer Aspire 7720",
+        .matches = {
+               DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+               DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"),
+               },
+       },
        {}
 };