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-rw-r--r--Documentation/sound/alsa/ALSA-Configuration.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 1065beed8d75..f947c4b04ab8 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -1411,6 +1411,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
vid - Vendor ID for the device (optional)
pid - Product ID for the device (optional)
+ device_setup - Device specific magic number (optional)
+ - Influence depends on the device
+ - Default: 0x0000
This module supports multiple devices, autoprobe and hotplugging.