Hello Marek,
On Mon, Feb 2, 2015 at 9:33 AM, Marek Szyprowski
<m.szyprowski@xxxxxxxxxxx> wrote:
> +
> +Required properties:
> +- compatible : contains "mmc-pwrseq-emmc".
> +- reset-gpios : contains a GPIO specifier. The reset GPIO is pulled
The DT binding says that the "reset-gpios" is a required property...
> +int mmc_pwrseq_emmc_alloc(struct mmc_host *host, struct device *dev)
> +{
> + struct mmc_pwrseq_emmc *pwrseq;
> + int ret = 0;
> +
> + pwrseq = kzalloc(sizeof(struct mmc_pwrseq_emmc), GFP_KERNEL);
> + if (!pwrseq)
> + return -ENOMEM;
> +
> + pwrseq->reset_gpio = gpiod_get_index(dev, "reset", 0, GPIOD_OUT_LOW);
> + if (IS_ERR(pwrseq->reset_gpio) &&
> + PTR_ERR(pwrseq->reset_gpio) != -ENOENT &&
> + PTR_ERR(pwrseq->reset_gpio) != -ENOSYS) {
> + ret = PTR_ERR(pwrseq->reset_gpio);
> + goto free;
> + }
...but here the GPIO is made optional since this will return and
propagate the error only for -EPROBE_DEFER error but won't do it for
-ENOENT and -ENOSYS.
Best regards,
Javier
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