tree 5c33a6f016c3094361210d9862f41a1324507074
parent 29ab875b7b4892af1a6cd0084faed37245b8dd2c
author Michal Simek <michal.simek@xilinx.com> 1449745812 +0100
committer Linus Walleij <linus.walleij@linaro.org> 1450098604 +0100

gpio: zynq: Do PM initialization earlier to support gpio hogs

GPIO hogs registration is call at the end of gpiochip_add() function.
Calling sequence is:
gpiochip_add -> of_gpiochip_add -> of_gpiochip_scan_hogs ->
gpiod_hog -> gpiochip_request_own_desc -> __gpiod_request ->
chip->request -> zynq_gpio_request which calls pm_runtime_get_sync()
which returns -13 because PM is not initialized yet.

Initialize PM before gpiochip_add is called to fix this issue.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>