From 2ce8008711e4837c11e99a94df55406085d0d098 Mon Sep 17 00:00:00 2001
From: Johannes Thumshirn <jthumshirn@suse.de>
Date: Wed, 2 Aug 2017 09:58:52 +0200
Subject: [PATCH] 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 <jthumshirn@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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 921a5d2a802bf..bb5c5692dedc5 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 4097ac9ea13ac..b1a0ad9d23b30 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 */
--
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