[PATCH 3/4] ARM: dts: bcm2835-rpi-zero-w: Add bcm43438 serial slave

Hi Loic,

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that is weird since we should be either in a probe context or in hdev->open context and both can sleep as far as I know.

Yes but this is an explicit warning in gpiolib based on gpio controller capabilities,
not on current context (WARN_ON(desc->gdev->chip->can_sleep)).

So, since we are always in process/thread context here, it seems safe to use the _cansleep version.

can someone whip up a patch for it and quickly test it.

Regards

Marcel