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>
diff --git a/sound/usb/ua101.c b/sound/usb/ua101.c
index 16dc7bd..4f4ccdf 100644
--- a/sound/usb/ua101.c
+++ b/sound/usb/ua101.c
@@ -911,6 +911,7 @@
.trigger = capture_pcm_trigger,
.pointer = capture_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
static struct snd_pcm_ops playback_pcm_ops = {
@@ -923,6 +924,7 @@
.trigger = playback_pcm_trigger,
.pointer = playback_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
static const struct uac_format_type_i_discrete_descriptor *