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    SubjectRe: [PATCH 5/6] atmel-mci: Power control option for each MMC Slot
    Date
    Hi!

    On Wednesday 17 June 2009 02:54:38 Rob Emanuele wrote:
    > Add support to the atmel-mci driver for a VCC pin in order to conserve power by removing power from an MMC Slot.
    ...

    > @@ -1544,6 +1544,13 @@ static int __init atmci_init_slot(struct atmel_mci *host,
    > }
    > }
    >
    > + if (gpio_is_valid(slot->vcc_pin)) {
    > + if (gpio_request(slot->vcc_pin, "mmc_pow")) {

    gpio_request will check for "gpio_is_valid" so this is not necessary.

    > + dev_dbg(&mmc->class_dev, "no power pin available\n");
    > + slot->vcc_pin = -EBUSY;
    > + }
    > + }
    > +
    ...

    Best regards

    Marc


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