diff options
author | Takashi Iwai <tiwai@suse.de> | 2013-11-08 16:45:38 +0100 |
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committer | Takashi Iwai <tiwai@suse.de> | 2013-11-08 16:45:38 +0100 |
commit | a6bc732b5a96b5403c2637e85c350b95ec6591f3 (patch) | |
tree | 4b1c3967cd1de42a5e36e567cbdd18e1f4e8446f /drivers/uio/uio.c | |
parent | 9a22a8f558d09a83965d2bbe168294eb8ffb70e9 (diff) | |
parent | dd212bd5bb8b15889821ef79213cdb5bd47c6f85 (diff) | |
download | linux-a6bc732b5a96b5403c2637e85c350b95ec6591f3.tar.bz2 |
Merge tag 'asoc-v3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v3.13
Some additional fixes for v3.13, the majority of which are removals and
downgrades of BUG()s from Takashi.
Diffstat (limited to 'drivers/uio/uio.c')
-rw-r--r-- | drivers/uio/uio.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index ba475632c5fa..0e808cf91d97 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -642,16 +642,29 @@ static int uio_mmap_physical(struct vm_area_struct *vma) { struct uio_device *idev = vma->vm_private_data; int mi = uio_find_mem_index(vma); + struct uio_mem *mem; if (mi < 0) return -EINVAL; + mem = idev->info->mem + mi; - vma->vm_ops = &uio_physical_vm_ops; + if (vma->vm_end - vma->vm_start > mem->size) + return -EINVAL; + vma->vm_ops = &uio_physical_vm_ops; vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + /* + * We cannot use the vm_iomap_memory() helper here, + * because vma->vm_pgoff is the map index we looked + * up above in uio_find_mem_index(), rather than an + * actual page offset into the mmap. + * + * So we just do the physical mmap without a page + * offset. + */ return remap_pfn_range(vma, vma->vm_start, - idev->info->mem[mi].addr >> PAGE_SHIFT, + mem->addr >> PAGE_SHIFT, vma->vm_end - vma->vm_start, vma->vm_page_prot); } |