Mailing List Archive

On Fri, 2010-07-23 at 12:12 +0200, Dan Carpenter wrote:
> In ivtvfb_callback_cleanup() we dereference "itv" before checking that
> it's NULL. "itv" is assigned with container_of() which basically never
> returns a NULL pointer so the check is pointless. I removed it, along
> with a similar check in ivtvfb_callback_init().
>
> I considered adding a check for v4l2_dev, but I looked at the code and I
> don't think that can be NULL either.
>
> Signed-off-by: Dan Carpenter <error27@gmail.com>

Hi Dan,

Thanks, but Jiri Slaby already caught this one:

https://patchwork.kernel.org/patch/112725/

I'm going to let Mauro pick up Jiri's patch out of patchwork.

Regards,
Andy


> diff --git a/drivers/media/video/ivtv/ivtvfb.c b/drivers/media/video/ivtv/ivtvfb.c
> index 2c2d862..be03a71 100644
> --- a/drivers/media/video/ivtv/ivtvfb.c
> +++ b/drivers/media/video/ivtv/ivtvfb.c
> @@ -1239,7 +1239,7 @@ static int __init ivtvfb_callback_init(struct device *dev, void *p)
> struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
> struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
>
> - if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
> + if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
> if (ivtvfb_init_card(itv) == 0) {
> IVTVFB_INFO("Framebuffer registered on %s\n",
> itv->v4l2_dev.name);
> @@ -1255,7 +1255,7 @@ static int ivtvfb_callback_cleanup(struct device *dev, void *p)
> struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
> struct osd_info *oi = itv->osd_info;
>
> - if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
> + if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
> if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
> IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
> itv->instance);
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html



_______________________________________________
ivtv-devel mailing list
ivtv-devel@ivtvdriver.org
http://ivtvdriver.org/mailman/listinfo/ivtv-devel