diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2018-02-06 03:02:23 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-02-26 08:06:31 -0500 |
| commit | d13a0139d7874a0577b5955d6eed895517d23b72 (patch) | |
| tree | bea9ec23c8fef71f4118c2b6fca465c66259ef1d /drivers/media/common | |
| parent | 14351d44830ec00b8c66b44c8c866944da678c33 (diff) | |
media: vb2: Fix videobuf2 to map correct area
Fixes vb2_vmalloc_get_userptr() to ioremap correct area.
Since the current code does ioremap the page address, if the offset > 0,
it does not do ioremap the last page and results in kernel panic.
This fixes to pass the size + offset to ioremap so that ioremap
can map correct area. Also, this uses __pfn_to_phys() to get the physical
address of given PFN.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Reported-by: Takao Orito <orito.takao@socionext.com>
Reported-by: Fumihiro ATSUMI <atsumi@infinitegra.co.jp>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/common')
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-vmalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-vmalloc.c b/drivers/media/common/videobuf2/videobuf2-vmalloc.c index 3a7c80cd1a17..359fb9804d16 100644 --- a/drivers/media/common/videobuf2/videobuf2-vmalloc.c +++ b/drivers/media/common/videobuf2/videobuf2-vmalloc.c @@ -106,7 +106,7 @@ static void *vb2_vmalloc_get_userptr(struct device *dev, unsigned long vaddr, if (nums[i-1] + 1 != nums[i]) goto fail_map; buf->vaddr = (__force void *) - ioremap_nocache(nums[0] << PAGE_SHIFT, size); + ioremap_nocache(__pfn_to_phys(nums[0]), size + offset); } else { buf->vaddr = vm_map_ram(frame_vector_pages(vec), n_pages, -1, PAGE_KERNEL); |