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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-19 19:01:04 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-19 19:01:04 +0200 |
| commit | 0fe09a45c4848b5b5607b968d959fdc1821c161d (patch) | |
| tree | 766cad2ca1cf971c72ae0e18eaca74ba57334213 | |
| parent | vm: convert fb_mmap to vm_iomap_memory() helper (diff) | |
| download | linux-0fe09a45c4848b5b5607b968d959fdc1821c161d.tar.xz linux-0fe09a45c4848b5b5607b968d959fdc1821c161d.zip | |
vm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper
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>
| -rw-r--r-- | sound/core/pcm_native.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 71ae86ca64ac..eb560fa32321 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3222,18 +3222,10 @@ EXPORT_SYMBOL_GPL(snd_pcm_lib_default_mmap); 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); |