From: Stephen Warren <swarren@wwwdotorg.org>
To: Laxman Dewangan <ldewangan@nvidia.com>
Cc: linus.walleij@linaro.org, grant.likely@secretlab.ca,
swarren@nvidia.com, linux-kernel@vger.kernel.org,
linux-tegra@vger.kernel.org
Subject: Re: [PATCH 1/2] gpio: tegra: create irq mapping in gpio_to_irq
Date: Wed, 07 Nov 2012 10:08:09 -0700 [thread overview]
Message-ID: <509A9579.5090002@wwwdotorg.org> (raw)
In-Reply-To: <1352300492-24779-1-git-send-email-ldewangan@nvidia.com>
On 11/07/2012 08:01 AM, Laxman Dewangan wrote:
> The gpio interrupts get mapped linearly and hence the mapping
> of irq need to be created by irq_create_mapping().
>
> The function gpio_to_irq() returns the irq by irq_find_mapping()
> and so returns 0 as there is no mapping created. Fix the function
> to create mapping when gpio_to_irq() get called.
I'm not convinced this should be needed. tegra_gpio_probe() contains:
> for (gpio = 0; gpio < tegra_gpio_chip.ngpio; gpio++) {
> int irq = irq_create_mapping(irq_domain, gpio);
which should create the mapping for every IRQ.
(although I do think the gpiochip_add() should be moved to the very end
of probe(), I doubt that impacts this issue much)
next prev parent reply other threads:[~2012-11-07 17:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-07 15:01 [PATCH 1/2] gpio: tegra: create irq mapping in gpio_to_irq Laxman Dewangan
2012-11-07 15:01 ` [PATCH 2/2] gpio: tegra: fix suspend/resume apis Laxman Dewangan
2012-11-07 17:11 ` Stephen Warren
2012-11-08 21:24 ` Linus Walleij
2012-11-07 17:08 ` Stephen Warren [this message]
2012-11-08 4:29 ` [PATCH 1/2] gpio: tegra: create irq mapping in gpio_to_irq Laxman Dewangan
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