diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2020-12-10 20:25:37 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2020-12-15 16:19:30 +0100 |
commit | a313357e704f2617f298333e3e617a38b1719760 (patch) | |
tree | 8892748e6d35f6d6aa0a60fbc6fac6930ca5083b /kernel/irq/manage.c | |
parent | 3c41e57a1e168d879e923c5583adeae47eec9f64 (diff) | |
download | linux-a313357e704f2617f298333e3e617a38b1719760.tar.bz2 |
genirq: Move irq_has_action() into core code
This function uses irq_to_desc() and is going to be used by modules to
replace the open coded irq_to_desc() (ab)usage. The final goal is to remove
the export of irq_to_desc() so driver cannot fiddle with it anymore.
Move it into the core code and fixup the usage sites to include the proper
header.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201210194042.548936472@linutronix.de
Diffstat (limited to 'kernel/irq/manage.c')
-rw-r--r-- | kernel/irq/manage.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index c826ba4141fe..a5a1cde5c1a2 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -2822,3 +2822,20 @@ out_unlock: return err; } EXPORT_SYMBOL_GPL(irq_set_irqchip_state); + +/** + * irq_has_action - Check whether an interrupt is requested + * @irq: The linux irq number + * + * Returns: A snapshot of the current state + */ +bool irq_has_action(unsigned int irq) +{ + bool res; + + rcu_read_lock(); + res = irq_desc_has_action(irq_to_desc(irq)); + rcu_read_unlock(); + return res; +} +EXPORT_SYMBOL_GPL(irq_has_action); |