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| author |   Thomas Gleixner <tglx@linutronix.de> | 2022-02-21 11:33:57 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-02-21 11:33:57 +0100 |
| commit | d2206fcabdfaff3958ab67cc5b8f63257e57b889 (patch) | |
| tree | f6bc697bb2d10e49e5123b4e0cc30c11aafc3120 /kernel/irq | |
| parent | genirq, softirq: Use in_hardirq() instead of in_irq() (diff) | |
| parent | genirq: Provide generic_handle_irq_safe() (diff) | |
| download | wireguard-linux-d2206fcabdfaff3958ab67cc5b8f63257e57b889.tar.xz wireguard-linux-d2206fcabdfaff3958ab67cc5b8f63257e57b889.zip | |
Merge tag 'irq-api-2022-02-21' into irq/core
Merge the generic_handle_irq_safe() API back into irq/core.
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/irqdesc.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 6167d32e27da..939d21cd55c3 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -662,6 +662,29 @@ int generic_handle_irq(unsigned int irq) } EXPORT_SYMBOL_GPL(generic_handle_irq); +/** + * generic_handle_irq_safe - Invoke the handler for a particular irq from any + * context. + * @irq: The irq number to handle + * + * Returns: 0 on success, a negative value on error. + * + * This function can be called from any context (IRQ or process context). It + * will report an error if not invoked from IRQ context and the irq has been + * marked to enforce IRQ-context only. + */ +int generic_handle_irq_safe(unsigned int irq) +{ + unsigned long flags; + int ret; + + local_irq_save(flags); + ret = handle_irq_desc(irq_to_desc(irq)); + local_irq_restore(flags); + return ret; +} +EXPORT_SYMBOL_GPL(generic_handle_irq_safe); + #ifdef CONFIG_IRQ_DOMAIN /** * generic_handle_domain_irq - Invoke the handler for a HW irq belonging |