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author | Thomas Gleixner <tglx@linutronix.de> | 2020-12-10 20:25:38 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2020-12-15 16:19:30 +0100 |
commit | fdd029630434b434b127efc7fba337da28f45658 (patch) | |
tree | c8a1c178eb8869422e6d5ee5517a9842dd5bd903 /kernel/irq/manage.c | |
parent | genirq: Move irq_has_action() into core code (diff) | |
download | linux-fdd029630434b434b127efc7fba337da28f45658.tar.xz linux-fdd029630434b434b127efc7fba337da28f45658.zip |
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 <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201210194042.703779349@linutronix.de
Diffstat (limited to '')
-rw-r--r-- | kernel/irq/manage.c | 20 |
1 files changed, 20 insertions, 0 deletions
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; +} |