From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: Re: [PATCH 8/9] ata: Add support for the Tegra124 SATA controller Date: Mon, 16 Jun 2014 16:14:34 -0600 Message-ID: <539F6C4A.2030005@wwwdotorg.org> References: <1401881559-18469-1-git-send-email-mperttunen@nvidia.com> <1401881559-18469-9-git-send-email-mperttunen@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1401881559-18469-9-git-send-email-mperttunen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Mikko Perttunen , thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, pdeschrijver-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-ide-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-ide@vger.kernel.org On 06/04/2014 05:32 AM, Mikko Perttunen wrote: > This adds support for the integrated AHCI-compliant Serial ATA > controller present on the NVIDIA Tegra124 system-on-chip. > diff --git a/drivers/ata/ahci_tegra.c b/drivers/ata/ahci_tegra.c > +static int tegra_ahci_controller_init(struct ahci_host_priv *hpriv) > + /* Pad calibration */ > + > + ret = tegra_fuse_readl(0x224, &val); > + if (ret) { > + dev_err(&tegra->pdev->dev, > + "failed to read sata calibration fuse: %d\n", ret); > + return ret; > + } > + > + calib = tegra124_pad_calibration[val]; Shouldn't val be range-checked before blindly using it?