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Date:	Mon, 16 Jun 2014 16:14:34 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Mikko Perttunen <mperttunen@...dia.com>, thierry.reding@...il.com,
	tj@...nel.org, pdeschrijver@...dia.com
CC:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-tegra@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: [PATCH 8/9] ata: Add support for the Tegra124 SATA controller

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?
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