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mtd: lpc32xx_slc: Make probe() return -EPROBE_DEFER if necessary

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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>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Roland Stigge 2012-06-27 17:51:15 +02:00 committed by David Woodhouse
parent 21535ab39a
commit d5842ab730
1 changed files with 2 additions and 0 deletions
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2
drivers/mtd/nand/lpc32xx_slc.c
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@ -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");