mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-14 04:41:26 +00:00
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>
This commit is contained in:
parent
fc9bbca8f6
commit
0fe09a45c4
@ -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);
|
||||
|
Loading…
Reference in New Issue
Block a user