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    Subject[PATCH 4/4] mtd: lpc32xx_slc: Make probe() return -EPROBE_DEFER if necessary
    Date
    Via of_get_named_gpio(), wp_gpio can become -EPROBE_DEFER which now makes
    probe() return -EPROBE_DEFER as well to wait until the gpio controller is
    probed before trying to probe lpc32xx_slc again.

    Signed-off-by: Roland Stigge <stigge@antcom.de>
    Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
    ---
    drivers/mtd/nand/lpc32xx_slc.c | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/drivers/mtd/nand/lpc32xx_slc.c b/drivers/mtd/nand/lpc32xx_slc.c
    index 4e8db3a..142a91d 100644
    --- a/drivers/mtd/nand/lpc32xx_slc.c
    +++ b/drivers/mtd/nand/lpc32xx_slc.c
    @@ -821,6 +821,8 @@ static int __devinit lpc32xx_nand_probe(struct platform_device *pdev)
    dev_err(&pdev->dev, "Missing platform data\n");
    return -ENOENT;
    }
    + if (host->ncfg->wp_gpio == -EPROBE_DEFER)
    + return -EPROBE_DEFER;
    if (gpio_is_valid(host->ncfg->wp_gpio) &&
    gpio_request(host->ncfg->wp_gpio, "NAND WP")) {
    dev_err(&pdev->dev, "GPIO not available\n");
    --
    1.7.10.4


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