linux-kernel - [PATCH v2 04/16] gpio: Move irq_base to struct gpio_irq

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20170928095628.21966-5-thierry.reding@gmail.com>
Date:   Thu, 28 Sep 2017 11:56:16 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Jonathan Hunter <jonathanh@...dia.com>, linux-gpio@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 04/16] gpio: Move irq_base to struct gpio_irq_chip

From: Thierry Reding <treding@...dia.com>

In order to consolidate the multiple ways to associate an IRQ chip with
a GPIO chip, move more fields into the new struct gpio_irq_chip.

Signed-off-by: Thierry Reding <treding@...dia.com>
---
 drivers/gpio/gpiolib.c                      |  2 +-
 drivers/pinctrl/mvebu/pinctrl-armada-37xx.c |  2 +-
 include/linux/gpio/driver.h                 | 10 ++++++++--
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f4e18e0ffb56..2f0fa3d646d2 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1770,7 +1770,7 @@ static int gpiochip_add_irqchip(struct gpio_chip *gpiochip)
 		ops = &gpiochip_domain_ops;
 
 	gpiochip->irq.domain = irq_domain_add_simple(np, gpiochip->ngpio,
-						     gpiochip->irq_base,
+						     gpiochip->irq.first,
 						     ops, gpiochip);
 	if (!gpiochip->irq.domain)
 		return -EINVAL;
diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
index c9851bd120b4..500238d898ea 100644
--- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
+++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
@@ -627,7 +627,7 @@ static void armada_37xx_irq_handler(struct irq_desc *desc)
 static unsigned int armada_37xx_irq_startup(struct irq_data *d)
 {
 	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
-	int irq = d->hwirq - chip->irq_base;
+	int irq = d->hwirq - chip->irq.first;
 	/*
 	 * The mask field is a "precomputed bitmask for accessing the
 	 * chip registers" which was introduced for the generic
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 031037bb8670..9389406df0b1 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -46,6 +46,14 @@ struct gpio_irq_chip {
 	 */
 	const struct irq_domain_ops *domain_ops;
 
+	/**
+	 * @first:
+	 *
+	 * If not dynamically assigned, the base (first) IRQ to allocate GPIO
+	 * chip IRQs from (deprecated).
+	 */
+	unsigned int first;
+
 	/**
 	 * @parent_handler:
 	 *
@@ -152,7 +160,6 @@ static inline struct gpio_irq_chip *to_gpio_irq_chip(struct irq_chip *chip)
  *	safely.
  * @bgpio_dir: shadowed direction register for generic GPIO to clear/set
  *	direction safely.
- * @irq_base: first linux IRQ number assigned to GPIO IRQ chip (deprecated)
  * @irq_handler: the irq handler to use (often a predefined irq core function)
  *	for GPIO IRQs, provided by GPIO driver
  * @irq_default_type: default IRQ triggering type applied during GPIO driver
@@ -232,7 +239,6 @@ struct gpio_chip {
 	 * With CONFIG_GPIOLIB_IRQCHIP we get an irqchip inside the gpiolib
 	 * to handle IRQs for most practical cases.
 	 */
-	unsigned int		irq_base;
 	irq_flow_handler_t	irq_handler;
 	unsigned int		irq_default_type;
 	unsigned int		irq_chained_parent;
-- 
2.14.1