linux-kernel - Re: [PATCH] pio: add arch specific gpio_is

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Date:	Tue, 7 Sep 2010 22:22:30 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Ryan Mallon <ryan@...ewatersys.com>
Cc:	"avictor.za@...il.com" <avictor.za@...il.com>,
	David Brownell <david-b@...bell.net>,
	Eric Miao <eric.y.miao@...il.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-kernel@...r.kernel.org, bn@...sdigital.com,
	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] pio: add arch specific gpio_is_valid() function

> Adding:
> 
> 	 device->output_pin = -EINVAL;

gpio numbers are unsigned in the rest of the API

It's unfortunate that 0 was used for a GPIO - I take it this is too late
to get fixed as we had to fix IRQ numbering and the like ?
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