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-rw-r--r--include/linux/ioport.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 2cd07cc29687..22d2115458c6 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -118,6 +118,10 @@ extern int allocate_resource(struct resource *root, struct resource *new,
118int adjust_resource(struct resource *res, resource_size_t start, 118int adjust_resource(struct resource *res, resource_size_t start,
119 resource_size_t size); 119 resource_size_t size);
120resource_size_t resource_alignment(struct resource *res); 120resource_size_t resource_alignment(struct resource *res);
121static inline resource_size_t resource_size(struct resource *res)
122{
123 return res->end - res->start + 1;
124}
121 125
122/* Convenience shorthand with allocation */ 126/* Convenience shorthand with allocation */
123#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name)) 127#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name))