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-rw-r--r--Documentation/ABI/testing/sysfs-bus-acpi1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-acpi b/Documentation/ABI/testing/sysfs-bus-acpi
index c78603497b97..58abacf59b2a 100644
--- a/Documentation/ABI/testing/sysfs-bus-acpi
+++ b/Documentation/ABI/testing/sysfs-bus-acpi
@@ -5,6 +5,7 @@ Description:
This attribute indicates the full path of ACPI namespace
object associated with the device object. For example,
\_SB_.PCI0.
+
This file is not present for device objects representing
fixed ACPI hardware features (like power and sleep
buttons).