Hi,
it turned out that x86 SG-pages that are used for PCM buffers aren't
safe on x86 in all cases, and we need some limitation and workarounds
for non-standard configurations. This patch set is an attempt to
paper over it in a minimalistic way.
Takashi
===
Takashi Iwai (4):
ALSA: pcm: Use dma_mmap_coherent() on x86, too
ALSA: memalloc: Initialize all fields of snd_dma_buffer properly
ALSA: memalloc: Make SG-buffer helper usable for continuous buffer,
too
ALSA: pcm: Use SG-buffer only when direct DMA is available
include/sound/memalloc.h | 9 ++++++++-
sound/core/memalloc.c | 7 +++----
sound/core/pcm_memory.c | 13 +++++++++++++
sound/core/pcm_native.c | 2 --
sound/core/sgbuf.c | 3 +++
5 files changed, 27 insertions(+), 7 deletions(-)
--
2.16.4
