Hi Laurent,
Thanks for the patch.
On Mon, Dec 17, 2012 at 09:52:48AM +0100, Laurent Pinchart wrote:
> drivers/media/platform/omap3isp/ispqueue.c:399:18: warning: 'pa' may be
> used uninitialized in this function [-Wuninitialized]
>
> This is a false positive but the compiler has no way to know about it,
> so initialize the variable to 0.
>
> drivers/media/platform/omap3isp/ispqueue.c:445:6: warning:
> 'vm_page_prot' may be used uninitialized in this function
> [-Wuninitialized]
>
> This is a false positive and the compiler should know better. Use
> uninitialized_var().
>
> Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> ---
> drivers/media/platform/omap3isp/ispqueue.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/omap3isp/ispqueue.c
> b/drivers/media/platform/omap3isp/ispqueue.c
> index 15bf3ea..1388eb7 100644
> --- a/drivers/media/platform/omap3isp/ispqueue.c
> +++ b/drivers/media/platform/omap3isp/ispqueue.c
> @@ -366,7 +366,7 @@ static int isp_video_buffer_prepare_pfnmap(struct
> isp_video_buffer *buf)
> unsigned long this_pfn;
> unsigned long start;
> unsigned long end;
> - dma_addr_t pa;
> + dma_addr_t pa = 0;
Why 0 and not something else arbitrary? :-)
The value will not be used as far as I can tell. If it gets used it
certainly is a bug.
> int ret = -EFAULT;
>
> start = buf->vbuf.m.userptr;
> @@ -419,7 +419,7 @@ done:
> static int isp_video_buffer_prepare_vm_flags(struct isp_video_buffer *buf)
> {
> struct vm_area_struct *vma;
> - pgprot_t vm_page_prot;
> + pgprot_t uninitialized_var(vm_page_prot);
> unsigned long start;
> unsigned long end;
> int ret = -EFAULT;
--
Cheers,
Sakari Ailus
e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk
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