[PATCH 3/9] media: omap_vout: Convert omap_vout_uservirt_to_phys() to use get_vaddr_pfns()

[Vlastimil Babka]

On 05/06/2015 09:28 AM, Jan Kara wrote:
> Convert omap_vout_uservirt_to_phys() to use get_vaddr_pfns() instead of
> hand made mapping of virtual address to physical address. Also the
> function leaked page reference from get_user_pages() so fix that by
> properly release the reference when omap_vout_buffer_release() is
> called.
>
> Signed-off-by: Jan Kara <jack at suse.cz>
> ---
>   drivers/media/platform/omap/omap_vout.c | 67 +++++++++++++++------------------
>   1 file changed, 31 insertions(+), 36 deletions(-)
>

...

> +	vec = frame_vector_create(1);
> +	if (!vec)
> +		return -ENOMEM;
>
> -		if (res == nr_pages) {
> -			physp =  __pa(page_address(&pages[0]) +
> -					(virtp & ~PAGE_MASK));
> -		} else {
> -			printk(KERN_WARNING VOUT_NAME
> -					"get_user_pages failed\n");
> -			return 0;
> -		}
> +	ret = get_vaddr_frames(virtp, 1, 1, 0, vec);

Use true/false where appropriate.