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| author | Bartosz Golaszewski <brgl@bgdev.pl> | 2017-05-31 18:06:59 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-21 15:53:11 +0200 |
| commit | 1c3e36309fe2e94b8a889fa32cb5c871434f8ed6 (patch) | |
| tree | e51e8f0c8b636fdbb88aa95f3371a151c4e0baf3 /kernel | |
| parent | f160203986a6ad23ab8077c4a25b260fe55d6e26 (diff) | |
| download | linux-stable-1c3e36309fe2e94b8a889fa32cb5c871434f8ed6.tar.gz linux-stable-1c3e36309fe2e94b8a889fa32cb5c871434f8ed6.tar.bz2 linux-stable-1c3e36309fe2e94b8a889fa32cb5c871434f8ed6.zip | |
irq/generic-chip: Provide devm_irq_alloc_generic_chip()
Provide a resource managed variant of irq_alloc_generic_chip().
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-doc@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Link: http://lkml.kernel.org/r/1496246820-13250-5-git-send-email-brgl@bgdev.pl
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/devres.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/irq/devres.c b/kernel/irq/devres.c index 1613bfd48365..21ee0aebccfb 100644 --- a/kernel/irq/devres.c +++ b/kernel/irq/devres.c @@ -4,6 +4,8 @@ #include <linux/gfp.h> #include <linux/irq.h> +#include "internals.h" + /* * Device resource management aware IRQ request/free implementation. */ @@ -198,3 +200,35 @@ int __devm_irq_alloc_descs(struct device *dev, int irq, unsigned int from, return base; } EXPORT_SYMBOL_GPL(__devm_irq_alloc_descs); + +#ifdef CONFIG_GENERIC_IRQ_CHIP +/** + * devm_irq_alloc_generic_chip - Allocate and initialize a generic chip + * for a managed device + * @dev: Device to allocate the generic chip for + * @name: Name of the irq chip + * @num_ct: Number of irq_chip_type instances associated with this + * @irq_base: Interrupt base nr for this chip + * @reg_base: Register base address (virtual) + * @handler: Default flow handler associated with this chip + * + * Returns an initialized irq_chip_generic structure. The chip defaults + * to the primary (index 0) irq_chip_type and @handler + */ +struct irq_chip_generic * +devm_irq_alloc_generic_chip(struct device *dev, const char *name, int num_ct, + unsigned int irq_base, void __iomem *reg_base, + irq_flow_handler_t handler) +{ + struct irq_chip_generic *gc; + unsigned long sz = sizeof(*gc) + num_ct * sizeof(struct irq_chip_type); + + gc = devm_kzalloc(dev, sz, GFP_KERNEL); + if (gc) + irq_init_generic_chip(gc, name, num_ct, + irq_base, reg_base, handler); + + return gc; +} +EXPORT_SYMBOL_GPL(devm_irq_alloc_generic_chip); +#endif /* CONFIG_GENERIC_IRQ_CHIP */ |