On Wed, Mar 28, 2012 at 04:33:50PM +0200, Thierry Reding wrote:
...
> +static struct pwm_ops tegra_pwm_ops = {
const
> + .config = tegra_pwm_config,
> + .enable = tegra_pwm_enable,
> + .disable = tegra_pwm_disable,
> + .owner = THIS_MODULE,
> +};
> +
> +static int tegra_pwm_probe(struct platform_device *pdev)
> +{
> + struct tegra_pwm_chip *pwm;
> + struct resource *r;
> + int ret;
> +
> + pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL);
> + if (!pwm) {
> + dev_err(&pdev->dev, "failed to allocate memory\n");
> + return -ENOMEM;
> + }
> +
> + pwm->dev = &pdev->dev;
> +
> + r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!r) {
> + dev_err(&pdev->dev, "no memory resources defined\n");
> + return -ENODEV;
> + }
> +
> + pwm->mmio_base = devm_request_and_ioremap(&pdev->dev, r);
> + if (!pwm->mmio_base) {
> + dev_err(&pdev->dev, "failed to ioremap() region\n");
> + return -ENODEV;
The kernel doc of devm_request_and_ioremap() suggests -EADDRNOTAVAIL.
> + }
> +
--
Regards,
Shawn
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