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Commit 9e9509e3 authored by Michał Mirosław's avatar Michał Mirosław Committed by Linus Walleij
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gpio: tegra: fix unbalanced chained_irq_enter/exit 



When more than one GPIO IRQs are triggered simultaneously,
tegra_gpio_irq_handler() called chained_irq_exit() multiple
times for one chained_irq_enter().

Fixes: 3c92db9a
Signed-off-by: default avatarMichał Mirosław <mirq-linux@rere.qmqm.pl>
[Also changed the variable to a bool]
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent df1e76f2

drivers/gpio/gpio-tegra.c

+3 −3
Original line number Diff line number Diff line
@@ -360,7 +360,7 @@ static void tegra_gpio_irq_handler(struct irq_desc *desc) 
{

	int port;

	int pin;

	int unmasked = 0;

	bool unmasked = false;

	int gpio;

	u32 lvl;

	unsigned long sta;
@@ -384,8 +384,8 @@ static void tegra_gpio_irq_handler(struct irq_desc *desc) 
			 * before executing the handler so that we don't

			 * miss edges

			 */

			if (lvl & (0x100 << pin)) {

				unmasked = 1;

			if (!unmasked && lvl & (0x100 << pin)) {

				unmasked = true;

				chained_irq_exit(chip, desc);

			}