From fdd029630434b434b127efc7fba337da28f45658 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Dec 2020 20:25:38 +0100 Subject: genirq: Move status flag checks to core These checks are used by modules and prevent the removal of the export of irq_to_desc(). Move the accessor into the core. Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20201210194042.703779349@linutronix.de --- kernel/irq/manage.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'kernel/irq') diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index a5a1cde5c1a2..ab8567f32501 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -2839,3 +2839,23 @@ bool irq_has_action(unsigned int irq) return res; } EXPORT_SYMBOL_GPL(irq_has_action); + +/** + * irq_check_status_bit - Check whether bits in the irq descriptor status are set + * @irq: The linux irq number + * @bitmask: The bitmask to evaluate + * + * Returns: True if one of the bits in @bitmask is set + */ +bool irq_check_status_bit(unsigned int irq, unsigned int bitmask) +{ + struct irq_desc *desc; + bool res = false; + + rcu_read_lock(); + desc = irq_to_desc(irq); + if (desc) + res = !!(desc->status_use_accessors & bitmask); + rcu_read_unlock(); + return res; +} -- cgit v1.2.3