linux-kernel - Re: [PATCH] media: ipu-bridge: fix error code in ipu_bridge

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Message-ID: <57a0dfae-cf1b-4c98-bc54-e70e722adf99@moroto.mountain>
Date: Fri, 10 May 2024 18:42:46 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Bingbu Cao <bingbu.cao@...el.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Hans de Goede <hdegoede@...hat.com>,
	Daniel Scally <dan.scally@...asonboard.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] media: ipu-bridge: fix error code in ipu_bridge_init()

On Fri, May 10, 2024 at 06:36:36PM +0300, Andy Shevchenko wrote:
> On Fri, May 10, 2024 at 06:27:30PM +0300, Dan Carpenter wrote:
> > On Fri, May 10, 2024 at 06:18:22PM +0300, Andy Shevchenko wrote:
> > > On Fri, May 10, 2024 at 06:10:37PM +0300, Dan Carpenter wrote:
> > > > Return -EINVAL if "bridge->n_sensors == 0".  Don't return success.
> 
> ...
> 
> > > >  	ret = ipu_bridge_connect_sensors(bridge);
> > > > -	if (ret || bridge->n_sensors == 0)
> > > > +	if (ret || bridge->n_sensors == 0) {
> > > > +		ret = ret ?: -EINVAL;
> > > >  		goto err_unregister_ipu;
> > > > +	}
> > > 
> > > I would split:
> > > 
> > > 	ret = ipu_bridge_connect_sensors(bridge);
> > > 	if (ret)
> > > 		goto err_unregister_ipu;
> > > 
> > > 	if (bridge->n_sensors == 0) {
> > > 		ret = -EINVAL;
> > > 		goto err_unregister_ipu;
> > > 	}
> > 
> > It's always hard to know which way to go on these...  I wrote it that
> > way in my first draft.  It's my prefered way as well but not everyone
> > agrees.  I'll resend.
> 
> Is the generated assembly the same?

Yeah, it does.

regards,
dan carpenter