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authorJohannes Thumshirn <jthumshirn@suse.de>2017-08-02 10:58:52 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-08-28 21:51:22 +0300
commit2ce8008711e4837c11e99a94df55406085d0d098 (patch)
tree361894dfa3ace1606927188629a777e6e5debb83 /drivers/mcb
parent5aabd3b0077e0577f60a1ca6b8bdad62f23353d8 (diff)
downloadlinux-2ce8008711e4837c11e99a94df55406085d0d098.tar.xz
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>
Diffstat (limited to 'drivers/mcb')
-rw-r--r--drivers/mcb/mcb-core.c20
1 files changed, 19 insertions, 1 deletions
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
@@ -418,6 +418,22 @@ 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
* @name: The name for the memory reference.
@@ -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;
}