linux-kernel - Re: [PATCH] video: backlight: sky81452-backlight: Fix reference count imbalance on error

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Date:   Wed, 19 Aug 2020 17:57:02 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Markus Elfring <Markus.Elfring@....de>
Cc:     Dinghao Liu <dinghao.liu@....edu.cn>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Bryan Wu <cooloney@...il.com>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Gyungoh Yoo <jack.yoo@...worksinc.com>,
        Jingoo Han <jingoohan1@...il.com>, Kangjie Lu <kjlu@....edu>
Subject: Re: [PATCH] video: backlight: sky81452-backlight: Fix reference
 count imbalance on error

On Wed, 19 Aug 2020, Markus Elfring wrote:

> > When of_property_read_u32_array() returns an error code,
> > a pairing refcount decrement is needed to keep np's refcount balanced.
> 
> Can another imperative wording be helpful for the change description?
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?id=18445bf405cb331117bc98427b1ba6f12418ad17#n151
> 
> Would an other commit message be a bit nicer?
> 
> 
> …
> > +++ b/drivers/video/backlight/sky81452-backlight.c
> > @@ -217,6 +217,7 @@ static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
> >  					num_entry);
> >  		if (ret < 0) {
> >  			dev_err(dev, "led-sources node is invalid.\n");
> > +			of_node_put(np);
> >  			return ERR_PTR(-EINVAL);
> >  		}
> 
> I propose to add the jump target “put_node” so that a bit of common exception
> handling code can be better reused at the end of this function implementation.
> 
> Regards,
> Markus

You can safely ignore any review comments from Markus!

However, this patch doesn't appear to be in my inbox.

Any ideas as to why?

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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