Thread (3 messages) 3 messages, 2 authors, 2012-06-16

[PATCH v2] mmc: mmci.c: Defer probe() in case of yet uninitialized GPIOs

From: Roland Stigge <hidden>
Date: 2012-06-16 19:04:22
Also in: linux-mmc, lkml

On 16/06/12 19:23, Arnd Bergmann wrote:
On Saturday 16 June 2012, Roland Stigge wrote:
quoted
+       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?
OK, will post a new patch.

Roland
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