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

From Mark Brown <broonie@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional
Date 2016-01-21 11:30 +0100
Message-ID <qTkF4-3Th-21@gated-at.bofh.it> (permalink)
References <qT0dk-6mw-13@gated-at.bofh.it> <qT0dl-6mw-25@gated-at.bofh.it> <qT47h-Ma-27@gated-at.bofh.it> <qThxv-1Ov-11@gated-at.bofh.it>
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On Thu, Jan 21, 2016 at 08:05:24AM +0100, Lothar Waßmann wrote:
> > 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?

> It's using timer interrupts to poll the LTC3589 state.

I know that is what your patch does, my question is why you say in your
commit log that "Otherwise the driver will continuously generate
interrupts and make the system unusable".

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PATCH [0/2] ARM: dts: am33xx: add support for Ka-Ro electronics TX48-7020 module Lothar Waßmann <LW@KARO-electronics.de> - 2016-01-20 13:40 +0100
  [PATCH 1/2] regulator: ltc3589: make IRQ optional Lothar Waßmann <LW@KARO-electronics.de> - 2016-01-20 13:40 +0100
    Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Mark Brown <broonie@kernel.org> - 2016-01-20 17:50 +0100
      Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Lothar Waßmann <LW@KARO-electronics.de> - 2016-01-21 08:10 +0100
        Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Mark Brown <broonie@kernel.org> - 2016-01-21 11:30 +0100
          Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Lothar Waßmann <LW@KARO-electronics.de> - 2016-01-21 11:30 +0100
            Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Mark Brown <broonie@kernel.org> - 2016-01-21 12:20 +0100
              Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Lothar Waßmann <LW@KARO-electronics.de> - 2016-01-21 12:40 +0100
                Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Mark Brown <broonie@kernel.org> - 2016-01-21 17:30 +0100
                Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Lothar Waßmann <LW@KARO-electronics.de> - 2016-01-22 06:50 +0100
                Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Mark Brown <broonie@kernel.org> - 2016-01-22 17:30 +0100
                Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Lothar Waßmann <LW@KARO-electronics.de> - 2016-01-25 13:40 +0100
                Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Mark Brown <broonie@kernel.org> - 2016-01-25 13:50 +0100
                Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Lothar Waßmann <LW@KARO-electronics.de> - 2016-01-25 14:00 +0100
                Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Mark Brown <broonie@kernel.org> - 2016-01-25 15:00 +0100
    Re: [PATCH 1/2] regulator: ltc3589: make IRQ optional Grygorii Strashko <grygorii.strashko@ti.com> - 2016-01-20 18:40 +0100

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