RE: [PATCH linux-next] : add put_device() after of_find_device_by_node()

[Chrisanthus, Anitha]

Hi Jing,

> -----Original Message-----
> From: Chrisanthus, Anitha
> Sent: Monday, August 23, 2021 4:25 PM
> To: jing yangyang <cgel.zte@xxxxxxxxx>
> Cc: Dea, Edmund J <edmund.j.dea@xxxxxxxxx>; David Airlie <airlied@xxxxxxxx>;
> Daniel Vetter <daniel@xxxxxxxx>; dri-devel@xxxxxxxxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; jing yangyang <jing.yangyang@xxxxxxxxxx>; Zeal
> Robot <zealci@xxxxxxxxxx>
> Subject: RE: [PATCH linux-next] : add put_device() after
> of_find_device_by_node()
> 
Thanks for the patch. Please add drm/kmb: to the subject line and also correct the checkpatch warning.
With that ab.

> Acked-by: Anitha Chrisanthus <anitha.chrisanthus@xxxxxxxxx>
> 
> > -----Original Message-----
> > From: jing yangyang <cgel.zte@xxxxxxxxx>
> > Sent: Thursday, August 19, 2021 7:10 PM
> > To: Chrisanthus, Anitha <anitha.chrisanthus@xxxxxxxxx>
> > Cc: Dea, Edmund J <edmund.j.dea@xxxxxxxxx>; David Airlie
> <airlied@xxxxxxxx>;
> > Daniel Vetter <daniel@xxxxxxxx>; dri-devel@xxxxxxxxxxxxxxxxxxxxx; linux-
> > kernel@xxxxxxxxxxxxxxx; jing yangyang <jing.yangyang@xxxxxxxxxx>; Zeal
> > Robot <zealci@xxxxxxxxxx>
> > Subject: [PATCH linux-next] : add put_device() after
> of_find_device_by_node()
> >
> > This was found by coccicheck:
> > ./drivers/gpu/drm/kmb/kmb_drv.c:503:2-8:
> > ERROR  missing put_device; call of_find_device_by_node on line 490,
> > but without a corresponding object release within this function.
> >
> > Reported-by: Zeal Robot <zealci@xxxxxxxxxx>
> > Signed-off-by: jing yangyang <jing.yangyang@xxxxxxxxxx>
> > ---
> >  drivers/gpu/drm/kmb/kmb_drv.c | 7 +++++--
> >  1 file changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/kmb/kmb_drv.c
> > b/drivers/gpu/drm/kmb/kmb_drv.c
> > index f54392e..58495a9 100644
> > --- a/drivers/gpu/drm/kmb/kmb_drv.c
> > +++ b/drivers/gpu/drm/kmb/kmb_drv.c
> > @@ -500,8 +500,10 @@ static int kmb_probe(struct platform_device *pdev)
> >  	ret = kmb_dsi_host_bridge_init(get_device(&dsi_pdev->dev));
> >
> >  	if (ret == -EPROBE_DEFER) {
> > +		put_device(&dsi_pdev->dev);
> >  		return -EPROBE_DEFER;
> >  	} else if (ret) {
> > +		put_device(&dsi_pdev->dev);
> >  		DRM_ERROR("probe failed to initialize DSI host bridge\n");
> >  		return ret;
> >  	}
> > @@ -509,9 +511,10 @@ static int kmb_probe(struct platform_device *pdev)
> >  	/* Create DRM device */
> >  	kmb = devm_drm_dev_alloc(dev, &kmb_driver,
> >  				 struct kmb_drm_private, drm);
> > -	if (IS_ERR(kmb))
> > +	if (IS_ERR(kmb)) {
> > +		put_device(&dsi_pdev->dev);
> >  		return PTR_ERR(kmb);
> > -
> > +	}
> >  	dev_set_drvdata(dev, &kmb->drm);
> >
> >  	/* Initialize MIPI DSI */
> > --
> > 1.8.3.1
> >