[PATCH 1/2] regulator: ltc3589: make IRQ optional

[Mark Brown]

On Wed, Jan 20, 2016 at 01:29:51PM +0100, Lothar Waßmann wrote:

> This pin is used as IRQ pin for the LTC3589 PMIC on the Ka-Ro
> electronics TX48 module. Make the IRQ optional in the driver and use a
> polling routine instead if no IRQ is specified in DT.
> Otherwise the driver will continuously generate interrupts and make
> the system unusable.

How will the driver generate interrupts if there is no interrupt
physically present in the system?
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