linux-kernel - Re: [PATCH] media: videobuf2: Return error after allocation failure

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Message-ID: <CAFqt6zYZ4y3jPAHaRxdx1pBngo7NoOHnNzZhU_5D5tvKxejUDw@mail.gmail.com>
Date:   Mon, 4 Feb 2019 07:33:37 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Nicolas Dufresne <nicolas@...fresne.ca>
Cc:     pawel@...iak.com, Marek Szyprowski <m.szyprowski@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>, mchehab@...nel.org,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sabyasachi Gupta <sabyasachi.linux@...il.com>,
        Brajeswar Ghosh <brajeswar.linux@...il.com>
Subject: Re: [PATCH] media: videobuf2: Return error after allocation failure

On Mon, Feb 4, 2019 at 3:25 AM Nicolas Dufresne <nicolas@...fresne.ca> wrote:
>
> Le dimanche 03 février 2019 à 19:06 +0530, Souptick Joarder a écrit :
> > There is no point to continuing assignemnt after memory allocation
>
> assignemnt -> assignment.

Ah, type.
>
> > failed, rather throw error immediately.
> >
> > Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
> > ---
> >  drivers/media/common/videobuf2/videobuf2-vmalloc.c | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/media/common/videobuf2/videobuf2-vmalloc.c b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
> > index 6dfbd5b..d3f71e2 100644
> > --- a/drivers/media/common/videobuf2/videobuf2-vmalloc.c
> > +++ b/drivers/media/common/videobuf2/videobuf2-vmalloc.c
> > @@ -46,16 +46,16 @@ static void *vb2_vmalloc_alloc(struct device *dev, unsigned long attrs,
> >
> >       buf->size = size;
> >       buf->vaddr = vmalloc_user(buf->size);
> > -     buf->dma_dir = dma_dir;
> > -     buf->handler.refcount = &buf->refcount;
> > -     buf->handler.put = vb2_vmalloc_put;
> > -     buf->handler.arg = buf;
> >
> >       if (!buf->vaddr) {
> >               pr_debug("vmalloc of size %ld failed\n", buf->size);
> >               kfree(buf);
> >               return ERR_PTR(-ENOMEM);
> >       }
> > +     buf->dma_dir = dma_dir;
> > +     buf->handler.refcount = &buf->refcount;
> > +     buf->handler.put = vb2_vmalloc_put;
> > +     buf->handler.arg = buf;
> >
> >       refcount_set(&buf->refcount, 1);
> >       return buf;
>