linux-kernel - [RFC/RFT PATCH 1/3] gpio: tegra: remove gpio_to

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Date:   Sat, 8 Jul 2017 17:44:11 -0500
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     Robert Jarzmik <robert.jarzmik@...e.fr>,
        Linus Walleij <linus.walleij@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        <linux-gpio@...r.kernel.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        Jerome Brunet <jbrunet@...libre.com>,
        Grygorii Strashko <grygorii.strashko@...com>
Subject: [RFC/RFT PATCH 1/3] gpio: tegra: remove gpio_to_irq() from hw irq handlers

gpio_to_irq() API expected to be used by GPIO consumers and
not drivers and there are no guarantee that its gpiolib implementation
is irq safe.

Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
 drivers/gpio/gpio-tegra.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index 88529d3..31b9a86 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -389,7 +389,8 @@ static void tegra_gpio_irq_handler(struct irq_desc *desc)
 				chained_irq_exit(chip, desc);
 			}
 
-			generic_handle_irq(gpio_to_irq(gpio + pin));
+			generic_handle_irq(irq_find_mapping(tgi->irq_domain,
+							    gpio + pin));
 		}
 	}
 
-- 
2.10.1