Re: [PATCH][next] dma-buf: heaps: remove redundant assignment to variable ret

[John Stultz]

On Wed, Oct 30, 2019 at 8:45 AM Andrew F. Davis <afd@xxxxxx> wrote:
>
> On 10/30/19 11:02 AM, Colin King wrote:
> > From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> >
> > The variable ret is being assigned with a value that is never
> > read, it is being re-assigned the same value on the err0 exit
> > path. The assignment is redundant and hence can be removed.
> >
> > Addresses-Coverity: ("Unused value")
> > Fixes: 47a32f9c1226 ("dma-buf: heaps: Add system heap to dmabuf heaps")
> > Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> > ---
>
>
> The root of the issue is that ret is not used in the error path, it
> should be, I suggest this fix:
>
> > --- a/drivers/dma-buf/heaps/system_heap.c
> > +++ b/drivers/dma-buf/heaps/system_heap.c
> > @@ -98,7 +98,7 @@ static int system_heap_allocate(struct dma_heap *heap,
> >  err0:
> >         kfree(helper_buffer);
> >
> > -       return -ENOMEM;
> > +       return ret;
> >  }

Sounds good! If its ok I'll generate a commit crediting Colin for
reporting the issue and Andrew for the fix and submit it to Sumit.

Many thanks to you both!
-john