resource definitions that just define start, end and flags =
IORESOURCE_MEM or IORESOURCE_IRQ (with start=end) are quite common. So
introduce a shortcut for them. For completeness add macros for
IORESOURCE_DMA and IORESOURCE_IO, too and also make available a set of
macros to specify named resources of all types which are less common.

Signed-off-by: Uwe Kleine-K?nig <redacted>
---
changes since v2:
- add parentheses around macro parameter usages

changes since v1:                                                               
- also add _IO and _DMA variants                                                

 include/linux/ioport.h |   30 ++++++++++++++++++++++++++++++
 1 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 63eb429..9d57a71 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h

@@ -109,6 +109,36 @@ struct resource_list {
 /* PCI control bits.  Shares IORESOURCE_BITS with above PCI ROM.  */
 #define IORESOURCE_PCI_FIXED		(1<<4)	/* Do not move resource */
 
+
+/* helpers to define resources */
+#define DEFINE_RES_NAMED(_start, _size, _name, _flags)			\
+	{								\
+		.start = (_start),					\
+		.end = (_start) + (_size) - 1,				\
+		.name = (_name),					\
+		.flags = (_flags),					\
+	}
+
+#define DEFINE_RES_IO_NAMED(_start, _size, _name)			\
+	DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_IO)