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author | Takashi Iwai <tiwai@suse.de> | 2010-01-18 13:58:57 (GMT) |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2010-01-18 14:00:34 (GMT) |
commit | c32d977b8157bf67cdf47729ce7dd054a26eb534 (patch) | |
tree | fedbd1c0d4382e88362abf81f719e6f127e19fa7 /sound | |
parent | 3e879d7bac705be4813a0ec9560cbe31db4b269f (diff) | |
download | linux-c32d977b8157bf67cdf47729ce7dd054a26eb534.tar.xz |
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 'sound')
-rw-r--r-- | sound/core/pcm_native.c | 9 | ||||
-rw-r--r-- | sound/drivers/vx/vx_pcm.c | 2 | ||||
-rw-r--r-- | sound/mips/sgio2audio.c | 3 | ||||
-rw-r--r-- | sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c | 1 | ||||
-rw-r--r-- | sound/usb/ua101.c | 2 | ||||
-rw-r--r-- | sound/usb/usbaudio.c | 2 |
6 files changed, 19 insertions, 0 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 5df0d21..88fff44 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3176,6 +3176,15 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); #endif /* SNDRV_PCM_INFO_MMAP */ +/* mmap callback with pgprot_noncached */ +int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream, + struct vm_area_struct *area) +{ + area->vm_page_prot = pgprot_noncached(area->vm_page_prot); + return snd_pcm_default_mmap(substream, area); +} +EXPORT_SYMBOL(snd_pcm_lib_mmap_noncached); + /* * mmap DMA buffer */ diff --git a/sound/drivers/vx/vx_pcm.c b/sound/drivers/vx/vx_pcm.c index c8385d2..35a2f71 100644 --- a/sound/drivers/vx/vx_pcm.c +++ b/sound/drivers/vx/vx_pcm.c @@ -905,6 +905,7 @@ static struct snd_pcm_ops vx_pcm_playback_ops = { .trigger = vx_pcm_trigger, .pointer = vx_pcm_playback_pointer, .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, }; @@ -1125,6 +1126,7 @@ static struct snd_pcm_ops vx_pcm_capture_ops = { .trigger = vx_pcm_trigger, .pointer = vx_pcm_capture_pointer, .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, }; diff --git a/sound/mips/sgio2audio.c b/sound/mips/sgio2audio.c index 9b486be..6aff217 100644 --- a/sound/mips/sgio2audio.c +++ b/sound/mips/sgio2audio.c @@ -691,6 +691,7 @@ static struct snd_pcm_ops snd_sgio2audio_playback1_ops = { .trigger = snd_sgio2audio_pcm_trigger, .pointer = snd_sgio2audio_pcm_pointer, .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, }; static struct snd_pcm_ops snd_sgio2audio_playback2_ops = { @@ -703,6 +704,7 @@ static struct snd_pcm_ops snd_sgio2audio_playback2_ops = { .trigger = snd_sgio2audio_pcm_trigger, .pointer = snd_sgio2audio_pcm_pointer, .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, }; static struct snd_pcm_ops snd_sgio2audio_capture_ops = { @@ -715,6 +717,7 @@ static struct snd_pcm_ops snd_sgio2audio_capture_ops = { .trigger = snd_sgio2audio_pcm_trigger, .pointer = snd_sgio2audio_pcm_pointer, .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, }; /* diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c index 0afa683..0d668f4 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c @@ -277,6 +277,7 @@ static struct snd_pcm_ops pdacf_pcm_capture_ops = { .trigger = pdacf_pcm_trigger, .pointer = pdacf_pcm_capture_pointer, .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, }; 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 @@ static struct snd_pcm_ops capture_pcm_ops = { .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 @@ static struct snd_pcm_ops playback_pcm_ops = { .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 * diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 4ada98e..b8e0b8f 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -1997,6 +1997,7 @@ static struct snd_pcm_ops snd_usb_playback_ops = { .trigger = snd_usb_pcm_playback_trigger, .pointer = snd_usb_pcm_pointer, .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, }; static struct snd_pcm_ops snd_usb_capture_ops = { @@ -2009,6 +2010,7 @@ static struct snd_pcm_ops snd_usb_capture_ops = { .trigger = snd_usb_pcm_capture_trigger, .pointer = snd_usb_pcm_pointer, .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, }; |