Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
genirq: add support for threaded interrupts to devres
Some devices use devres_request_irq() for to install their interrupt
handler. Add support for threaded interrupts to devres as well.
[tglx - simplified and adapted to latest threadirq version]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
authored by Arjan van de Ven and committed by Thomas Gleixner 935bd5b9 3aa551c9
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-3
include/linux/interrupt.h
+14
-3
include/linux/interrupt.h
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struct device;
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extern int __must_check devm_request_irq(struct device *dev, unsigned int irq,
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irq_handler_t handler, unsigned long irqflags,
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const char *devname, void *dev_id);
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extern int __must_check
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devm_request_threaded_irq(struct device *dev, unsigned int irq,
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irq_handler_t handler, irq_handler_t thread_fn,
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unsigned long irqflags, const char *devname,
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void *dev_id);
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static inline int __must_check
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devm_request_irq(struct device *dev, unsigned int irq, irq_handler_t handler,
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unsigned long irqflags, const char *devname, void *dev_id)
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{
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return devm_request_threaded_irq(dev, irq, handler, NULL, irqflags,
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devname, dev_id);
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}
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extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
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/*
+10
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kernel/irq/devres.c
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kernel/irq/devres.c
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}
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/**
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* devm_request_irq - allocate an interrupt line for a managed device
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* devm_request_threaded_irq - allocate an interrupt line for a managed device
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* @dev: device to request interrupt for
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* @irq: Interrupt line to allocate
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* @handler: Function to be called when the IRQ occurs
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* @thread_fn: function to be called in a threaded interrupt context. NULL
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* for devices which handle everything in @handler
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* @irqflags: Interrupt type flags
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* @devname: An ascii name for the claiming device
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* @dev_id: A cookie passed back to the handler function
···
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* If an IRQ allocated with this function needs to be freed
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* separately, dev_free_irq() must be used.
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*/
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int devm_request_irq(struct device *dev, unsigned int irq,
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irq_handler_t handler, unsigned long irqflags,
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const char *devname, void *dev_id)
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int devm_request_threaded_irq(struct device *dev, unsigned int irq,
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irq_handler_t handler, irq_handler_t thread_fn,
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unsigned long irqflags, const char *devname,
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void *dev_id)
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{
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struct irq_devres *dr;
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int rc;
···
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if (!dr)
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return -ENOMEM;
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rc = request_irq(irq, handler, irqflags, devname, dev_id);
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rc = request_threaded_irq(irq, handler, thread_fn, irqflags, devname,
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dev_id);
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if (rc) {
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devres_free(dr);
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return rc;
···
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return 0;
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}
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EXPORT_SYMBOL(devm_request_irq);
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EXPORT_SYMBOL(devm_request_threaded_irq);
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/**
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* devm_free_irq - free an interrupt