From 3e879d7bac705be4813a0ec9560cbe31db4b269f Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 18 Jan 2010 14:49:50 +0100 Subject: ALSA: pcm - Remove unneeded ifdef pgprot_noncached Signed-off-by: Takashi Iwai --- sound/core/pcm_native.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index a870fe6..5df0d21 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3162,9 +3162,7 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, long size; unsigned long offset; -#ifdef pgprot_noncached area->vm_page_prot = pgprot_noncached(area->vm_page_prot); -#endif area->vm_flags |= VM_IO; size = area->vm_end - area->vm_start; offset = area->vm_pgoff << PAGE_SHIFT; -- cgit v1.1 From c32d977b8157bf67cdf47729ce7dd054a26eb534 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 18 Jan 2010 14:58:57 +0100 Subject: 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 --- sound/core/pcm_native.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'sound/core') 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 */ -- cgit v1.1