X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=Documentation%2Flaptops%2Fthinkpad-acpi.txt;h=1565eefd6fd52a4c225fd19f4036164b62af2cbc;hb=7a19a237d54e3f209d543b69b27f24a23b335c40;hp=f6f80257addb12a3f498c65f6ae6cfe279439df5;hpb=92944c1c943647c7eb39c081feeecdd169f68ee4;p=mv-sheeva.git

diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index f6f80257add..1565eefd6fd 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -1024,6 +1024,10 @@ ThinkPad-specific interface.  The driver will disable its native
 backlight brightness control interface if it detects that the standard
 ACPI interface is available in the ThinkPad.
 
+If you want to use the thinkpad-acpi backlight brightness control
+instead of the generic ACPI video backlight brightness control for some
+reason, you should use the acpi_backlight=vendor kernel parameter.
+
 The brightness_enable module parameter can be used to control whether
 the LCD brightness control feature will be enabled when available.
 brightness_enable=0 forces it to be disabled.  brightness_enable=1