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-rw-r--r--sound/hda/Kconfig13
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/hda/Kconfig b/sound/hda/Kconfig
index 6dc3914fd28b..3129546398d0 100644
--- a/sound/hda/Kconfig
+++ b/sound/hda/Kconfig
@@ -14,3 +14,16 @@ config SND_HDA_I915
config SND_HDA_EXT_CORE
tristate
select SND_HDA_CORE
+
+config SND_HDA_PREALLOC_SIZE
+ int "Pre-allocated buffer size for HD-audio driver"
+ range 0 32768
+ default 64
+ help
+ Specifies the default pre-allocated buffer-size in kB for the
+ HD-audio driver. A larger buffer (e.g. 2048) is preferred
+ for systems using PulseAudio. The default 64 is chosen just
+ for compatibility reasons.
+
+ Note that the pre-allocation size can be changed dynamically
+ via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.