linux-kernel - Re: [PATCH v3 3/5] ata: add Broadcom AHCI SATA3 driver for STB chips

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Date:	Thu, 21 May 2015 18:28:16 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Brian Norris <computersforpeace@...il.com>
Cc:	Fabio Estevam <festevam@...il.com>,
	Kishon Vijay Abraham I <kishon@...com>,
	Mark Rutland <mark.rutland@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kevin Cernekee <cernekee@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
	bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
	Gregory Fong <gregory.0xf0@...il.com>,
	Kumar Gala <galak@...eaurora.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 3/5] ata: add Broadcom AHCI SATA3 driver for STB chips

On Thu, May 21, 2015 at 03:26:10PM -0700, Brian Norris wrote:
> On Thu, May 21, 2015 at 3:20 PM, Tejun Heo <tj@...nel.org> wrote:
> > On Thu, May 21, 2015 at 07:16:07PM -0300, Fabio Estevam wrote:
> >> On Tue, May 12, 2015 at 8:28 PM, Brian Norris
> >> <computersforpeace@...il.com> wrote:
> >>
> >> > +       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ahci");
> >> > +       ahci = devm_ioremap_resource(&pdev->dev, res);
> >> > +       if (IS_ERR(ahci))
> >> > +               return 0;
> >>
> >> You should propagate 'return PTR_ERR(ahci)' instead.
> >
> > Brian, can you please update the patch?
> 
> Note how the function brcm_ahci_get_portmask() is used. In brcm_ahci_probe():
> 
>         priv->port_mask = brcm_ahci_get_portmask(pdev, priv);
>         if (!priv->port_mask)
>                 return -ENODEV;
> 
> I could try to change the return semantics if really needed. Or I
> could add some comments on brcm_ahci_get_portmask() to note its return
> semantics. Or I could just leave the driver as-is. Your call.

Ah, you're right.  It's fine.  Leave it alone.

Thanks.

-- 
tejun
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