[PATCH v2] mmc: mmci.c: Defer probe() in case of yet uninitialized GPIOs
From: arnd@arndb.de (Arnd Bergmann)
Date: 2012-06-16 17:23:42
Also in:
linux-mmc, lkml
On Saturday 16 June 2012, Roland Stigge wrote:
+ if (of_get_property(np, "wp-gpios", NULL)) {
+ pdata->gpio_wp = of_get_named_gpio(np, "wp-gpios", 0);
+ if (pdata->gpio_wp == -ENODEV)
+ pdata->gpio_wp = -EPROBE_DEFER;
+ } else {
+ pdata->gpio_wp = -ENODEV;
+ }This is still very ugly and there is a certain danfer that we might have to duplicate this across more drivers. Can't we make of_get_named_gpio_flags return -EPROBE_DEFER in cases where we can't find the GPIO number yet but still have a chance of returning it at a later point? Arnd