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Add a comment clarifying that it serializes IRQ bus lock/unlock operations used to defer and sync pending IRQ type and mask changes to hardware. Signed-off-by: Rahul Joshi --- drivers/staging/greybus/gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c index 12185f7a982c..89c15b804b2a 100644 --- a/drivers/staging/greybus/gpio.c +++ b/drivers/staging/greybus/gpio.c @@ -39,7 +39,7 @@ struct gb_gpio_controller { struct gpio_chip chip; struct irq_chip irqc; - struct mutex irq_lock; + struct mutex irq_lock; /* protects irq bus operations */ }; static struct gpio_chip *irq_data_to_gpio_chip(struct irq_data *d) -- 2.34.1