diff options
author | Takashi Iwai <tiwai@suse.de> | 2010-01-18 08:58:57 -0500 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2010-01-18 09:00:34 -0500 |
commit | c32d977b8157bf67cdf47729ce7dd054a26eb534 (patch) | |
tree | fedbd1c0d4382e88362abf81f719e6f127e19fa7 /include/sound/pcm.h | |
parent | 3e879d7bac705be4813a0ec9560cbe31db4b269f (diff) |
ALSA: pcm - Call pgprot_noncached() for vmalloc'ed buffers
pgprot_noncached() can be set for vmalloc'ed buffers safely, and we'd
need non-cached behavior more or less, even for the intermediate ring-
buffers.
Now snd_pcm_lib_mmap_vmalloc() is added as the common PCM mmap callback
that is coupled with snd_pcm_lib_alloc_vmalloc_buffer() & co.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/pcm.h')
-rw-r--r-- | include/sound/pcm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 1d4ca2aae50d..aabf48bb8ee6 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h | |||
@@ -1021,6 +1021,10 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_s | |||
1021 | #define snd_pcm_lib_mmap_iomem NULL | 1021 | #define snd_pcm_lib_mmap_iomem NULL |
1022 | #endif | 1022 | #endif |
1023 | 1023 | ||
1024 | int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream, | ||
1025 | struct vm_area_struct *area); | ||
1026 | #define snd_pcm_lib_mmap_vmalloc snd_pcm_lib_mmap_noncached | ||
1027 | |||
1024 | static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) | 1028 | static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) |
1025 | { | 1029 | { |
1026 | *max = dma < 4 ? 64 * 1024 : 128 * 1024; | 1030 | *max = dma < 4 ? 64 * 1024 : 128 * 1024; |