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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-19 10:01:04 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-04-25 21:23:49 -0700
commit69c8dbb74ce747df83ad81ba73db965d7a716726 (patch)
tree3cac579e85a4f0238c005774075384ce70351a03
parentd1a01d18320e37367e23f006f0dfbd74ff32de68 (diff)
downloadlinux-linaro-stable-69c8dbb74ce747df83ad81ba73db965d7a716726.tar.gz
vm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper
commit 0fe09a45c4848b5b5607b968d959fdc1821c161d upstream. This is my example conversion of a few existing mmap users. The pcm mmap case is one of the more straightforward ones. Acked-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--sound/core/pcm_native.c12
1 files changed, 2 insertions, 10 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 7393551..fbec3f5 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -3208,18 +3208,10 @@ static int snd_pcm_default_mmap(struct snd_pcm_substream *substream,
int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
struct vm_area_struct *area)
{
- long size;
- unsigned long offset;
+ struct snd_pcm_runtime *runtime = substream->runtime;;
area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
- area->vm_flags |= VM_IO;
- size = area->vm_end - area->vm_start;
- offset = area->vm_pgoff << PAGE_SHIFT;
- if (io_remap_pfn_range(area, area->vm_start,
- (substream->runtime->dma_addr + offset) >> PAGE_SHIFT,
- size, area->vm_page_prot))
- return -EAGAIN;
- return 0;
+ return vm_iomap_memory(area, runtime->dma_addr, runtime->dma_bytes);
}
EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem);