linux-kernel - Re: [PATCH 1/1] PINCTRL: Warn if direct IRQ GPIO set to output

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Message-ID: <20140530084822.GC1645@lahna.fi.intel.com>
Date:	Fri, 30 May 2014 11:48:22 +0300
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	eric.ernst@...ux.intel.com
Cc:	linus.walleij@...aro.org, linux-kernel@...r.kernel.org,
	mark.gross@...el.com
Subject: Re: [PATCH 1/1] PINCTRL: Warn if direct IRQ GPIO set to output

On Tue, May 27, 2014 at 12:26:44PM -0700, eric.ernst@...ux.intel.com wrote:
> From: Eric Ernst <eric.ernst@...ux.intel.com>
> 
> For Baytrail, you should never set a GPIO set to direct_irq
> to output mode.  When direct_irq_en is set for a GPIO, it is
> tied directly to an APIC internally, and making the pad output
> does not make any sense. Assert a WARN() in the event this happens.

Can't we just clear that flag when the GPIO is requested? Or is this
something which can't be done at this point?
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