From 2ce8008711e4837c11e99a94df55406085d0d098 Mon Sep 17 00:00:00 2001 From: Johannes Thumshirn Date: Wed, 2 Aug 2017 09:58:52 +0200 Subject: mcb: introduce mcb_get_resource() Introduce mcb_get_resource() as a common accessor to a mcb device's memory or IRQ resources. Signed-off-by: Johannes Thumshirn Signed-off-by: Greg Kroah-Hartman --- drivers/mcb/mcb-core.c | 20 +++++++++++++++++++- include/linux/mcb.h | 2 ++ 2 files changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/mcb/mcb-core.c b/drivers/mcb/mcb-core.c index 921a5d2a802b..bb5c5692dedc 100644 --- a/drivers/mcb/mcb-core.c +++ b/drivers/mcb/mcb-core.c @@ -417,6 +417,22 @@ void mcb_bus_add_devices(const struct mcb_bus *bus) } EXPORT_SYMBOL_GPL(mcb_bus_add_devices); +/** + * mcb_get_resource() - get a resource for a mcb device + * @dev: the mcb device + * @type: the type of resource + */ +struct resource *mcb_get_resource(struct mcb_device *dev, unsigned int type) +{ + if (type == IORESOURCE_MEM) + return &dev->mem; + else if (type == IORESOURCE_IRQ) + return &dev->irq; + else + return NULL; +} +EXPORT_SYMBOL_GPL(mcb_get_resource); + /** * mcb_request_mem() - Request memory * @dev: The @mcb_device the memory is for @@ -460,7 +476,9 @@ EXPORT_SYMBOL_GPL(mcb_release_mem); static int __mcb_get_irq(struct mcb_device *dev) { - struct resource *irq = &dev->irq; + struct resource *irq; + + irq = mcb_get_resource(dev, IORESOURCE_IRQ); return irq->start; } diff --git a/include/linux/mcb.h b/include/linux/mcb.h index 4097ac9ea13a..b1a0ad9d23b3 100644 --- a/include/linux/mcb.h +++ b/include/linux/mcb.h @@ -136,5 +136,7 @@ extern struct resource *mcb_request_mem(struct mcb_device *dev, const char *name); extern void mcb_release_mem(struct resource *mem); extern int mcb_get_irq(struct mcb_device *dev); +extern struct resource *mcb_get_resource(struct mcb_device *dev, + unsigned int type); #endif /* _LINUX_MCB_H */ -- cgit v1.2.3