resource: add resource_type() and IORESOURCE_TYPE_BITS

Add resource_type() and IORESOURCE_TYPE_BITS.  They make it easier to add
more resource types without having to rewrite tons of code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index ee9bcc6f32b6..0dde77272d7a 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -34,7 +34,8 @@ struct resource_list {
  */
 #define IORESOURCE_BITS         0x000000ff      /* Bus-specific bits */
 
-#define IORESOURCE_IO           0x00000100      /* Resource type */
+#define IORESOURCE_TYPE_BITS    0x00000f00      /* Resource type */
+#define IORESOURCE_IO           0x00000100
 #define IORESOURCE_MEM          0x00000200
 #define IORESOURCE_IRQ          0x00000400
 #define IORESOURCE_DMA          0x00000800
@@ -126,6 +127,10 @@ static inline resource_size_t resource_size(struct resource *res)
 {
         return res->end - res->start + 1;
 }
+static inline unsigned long resource_type(struct resource *res)
+{
+        return res->flags & IORESOURCE_TYPE_BITS;
+}
 
 /* Convenience shorthand with allocation */
 #define request_region(start,n,name)    __request_region(&ioport_resource, (start), (n), (name))