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-rw-r--r--Documentation/pm.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/pm.txt b/Documentation/pm.txt
index cc63ae18d147..2ea1149bf6b0 100644
--- a/Documentation/pm.txt
+++ b/Documentation/pm.txt
@@ -38,6 +38,12 @@ system the associated daemon will exit gracefully.
Driver Interface -- OBSOLETE, DO NOT USE!
----------------*************************
+
+Note: pm_register(), pm_access(), pm_dev_idle() and friends are
+obsolete. Please do not use them. Instead you should properly hook
+your driver into the driver model, and use its suspend()/resume()
+callbacks to do this kind of stuff.
+
If you are writing a new driver or maintaining an old driver, it
should include power management support. Without power management
support, a single driver may prevent a system with power management