Check if the GPIO is valid (or set at all). If no GPIO is set in the
devicetree, a gpiolib related kernel warning + stacktrace is shown during
boot and gpio-export reports GPIOs as exported albeit none really is.
Signed-off-by: Mathias Kresin <dev@kresin.me>
- removed upstreamed patches
- 0901-spansion_nand_id_fix.patch is disabled, not clear if it's needed
Signed-off-by: Roman Yeryomin <roman@advem.lv>
Signed-off-by: John Crispin <john@phrozen.org>