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genirq/irq_sim: Return the base of the irq range from irq_sim_init()

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Returning the base of the allocated interrupt range from irq_sim_init() and
devm_irq_sim_init() allows users to handle the logic of associating irq
numbers with any other driver-specific resources without having to use
irq_sim_irqnum().

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/20180304121018.640-4-brgl@bgdev.pl
This commit is contained in:
Bartosz Golaszewski 2018-03-04 13:10:18 +01:00 committed by Thomas Gleixner
parent 28b6afa7d4
commit f09777fa89
1 changed files with 6 additions and 4 deletions
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10
kernel/irq/irq_sim.c
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@ -50,7 +50,8 @@ static void irq_sim_handle_irq(struct irq_work *work)
* @sim: The interrupt simulator object to initialize.
* @num_irqs: Number of interrupts to allocate
*
* Returns 0 on success and a negative error number on failure.
* On success: return the base of the allocated interrupt range.
* On failure: a negative errno.
*/
int irq_sim_init(struct irq_sim *sim, unsigned int num_irqs)
{
@ -79,7 +80,7 @@ int irq_sim_init(struct irq_sim *sim, unsigned int num_irqs)
init_irq_work(&sim->work_ctx.work, irq_sim_handle_irq);
sim->irq_count = num_irqs;
return 0;
return sim->irq_base;
}
EXPORT_SYMBOL_GPL(irq_sim_init);
@ -111,7 +112,8 @@ static void devm_irq_sim_release(struct device *dev, void *res)
* @sim: The interrupt simulator object to initialize.
* @num_irqs: Number of interrupts to allocate
*
* Returns 0 on success and a negative error number on failure.
* On success: return the base of the allocated interrupt range.
* On failure: a negative errno.
*/
int devm_irq_sim_init(struct device *dev, struct irq_sim *sim,
unsigned int num_irqs)
@ -132,7 +134,7 @@ int devm_irq_sim_init(struct device *dev, struct irq_sim *sim,
dr->sim = sim;
devres_add(dev, dr);
return 0;
return rv;
}
EXPORT_SYMBOL_GPL(devm_irq_sim_init);