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-rw-r--r--sound/hda/Kconfig6
1 files changed, 4 insertions, 2 deletions
diff --git a/sound/hda/Kconfig b/sound/hda/Kconfig
index b0c88fe040ee..4ca6b09056f3 100644
--- a/sound/hda/Kconfig
+++ b/sound/hda/Kconfig
@@ -21,14 +21,16 @@ config SND_HDA_EXT_CORE
select SND_HDA_CORE
config SND_HDA_PREALLOC_SIZE
- int "Pre-allocated buffer size for HD-audio driver"
+ int "Pre-allocated buffer size for HD-audio driver" if !SND_DMA_SGBUF
range 0 32768
- default 64
+ default 0 if SND_DMA_SGBUF
+ default 64 if !SND_DMA_SGBUF
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.
+ On x86 systems, the default is zero as we need no preallocation.
Note that the pre-allocation size can be changed dynamically
via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.