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Re: [PATCH] gpio: zynq: Do PM initialization earlier to support gpio hogs

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  Re: [PATCH] gpio: zynq: Do PM initialization earlier to support gpio hogs Linus Walleij <linus.walleij@linaro.org> - 2015-12-14 14:20 +0100

#1291179 — Re: [PATCH] gpio: zynq: Do PM initialization earlier to support gpio hogs

On Thu, Dec 10, 2015 at 12:10 PM, Michal Simek <michal.simek@xilinx.com> wrote:

> 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>

Patch applied!

Yours,
Linus Walleij
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