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gpio: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc

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Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
already have a pointer to corresponding irq_desc.

Preparatory patch for the removal of the 'irq' argument from irq flow
handlers.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jiang Liu
2015-06-04 12:13:15 +08:00
committed by Thomas Gleixner
parent c16edb8b3a
commit 476f8b4c94
10 changed files with 14 additions and 15 deletions
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drivers/gpio/gpio-tegra.c
+1 -3
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@@ -268,16 +268,14 @@ static void tegra_gpio_irq_shutdown(struct irq_data *d)
static void tegra_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
{
struct tegra_gpio_bank *bank;
int port;
int pin;
int unmasked = 0;
struct irq_chip *chip = irq_desc_get_chip(desc);
struct tegra_gpio_bank *bank = irq_desc_get_handler_data(desc);
chained_irq_enter(chip, desc);
bank = irq_get_handler_data(irq);
for (port = 0; port < 4; port++) {
int gpio = tegra_gpio_compose(bank->bank, port, 0);
unsigned long sta = tegra_gpio_readl(GPIO_INT_STA(gpio)) &