genirq: Add devm_request_any_context_irq()
Some drivers use request_any_context_irq() but there isn't a devm_* function for it. Add one so that these drivers don't need to explicitly free the irq on driver detach. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: linux-arm-kernel@lists.infradead.org Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: http://lkml.kernel.org/r/1388709460-19222-3-git-send-email-sboyd@codeaurora.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
parent
494479038d
commit
0668d30651
2 changed files with 50 additions and 0 deletions
|
@ -158,6 +158,11 @@ devm_request_irq(struct device *dev, unsigned int irq, irq_handler_t handler,
|
|||
devname, dev_id);
|
||||
}
|
||||
|
||||
extern int __must_check
|
||||
devm_request_any_context_irq(struct device *dev, unsigned int irq,
|
||||
irq_handler_t handler, unsigned long irqflags,
|
||||
const char *devname, void *dev_id);
|
||||
|
||||
extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
|
||||
|
||||
/*
|
||||
|
|
|
@ -72,6 +72,51 @@ int devm_request_threaded_irq(struct device *dev, unsigned int irq,
|
|||
}
|
||||
EXPORT_SYMBOL(devm_request_threaded_irq);
|
||||
|
||||
/**
|
||||
* devm_request_any_context_irq - allocate an interrupt line for a managed device
|
||||
* @dev: device to request interrupt for
|
||||
* @irq: Interrupt line to allocate
|
||||
* @handler: Function to be called when the IRQ occurs
|
||||
* @thread_fn: function to be called in a threaded interrupt context. NULL
|
||||
* for devices which handle everything in @handler
|
||||
* @irqflags: Interrupt type flags
|
||||
* @devname: An ascii name for the claiming device
|
||||
* @dev_id: A cookie passed back to the handler function
|
||||
*
|
||||
* Except for the extra @dev argument, this function takes the
|
||||
* same arguments and performs the same function as
|
||||
* request_any_context_irq(). IRQs requested with this function will be
|
||||
* automatically freed on driver detach.
|
||||
*
|
||||
* If an IRQ allocated with this function needs to be freed
|
||||
* separately, devm_free_irq() must be used.
|
||||
*/
|
||||
int devm_request_any_context_irq(struct device *dev, unsigned int irq,
|
||||
irq_handler_t handler, unsigned long irqflags,
|
||||
const char *devname, void *dev_id)
|
||||
{
|
||||
struct irq_devres *dr;
|
||||
int rc;
|
||||
|
||||
dr = devres_alloc(devm_irq_release, sizeof(struct irq_devres),
|
||||
GFP_KERNEL);
|
||||
if (!dr)
|
||||
return -ENOMEM;
|
||||
|
||||
rc = request_any_context_irq(irq, handler, irqflags, devname, dev_id);
|
||||
if (rc) {
|
||||
devres_free(dr);
|
||||
return rc;
|
||||
}
|
||||
|
||||
dr->irq = irq;
|
||||
dr->dev_id = dev_id;
|
||||
devres_add(dev, dr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(devm_request_any_context_irq);
|
||||
|
||||
/**
|
||||
* devm_free_irq - free an interrupt
|
||||
* @dev: device to free interrupt for
|
||||
|
|
Loading…
Reference in a new issue