[PATCH] sort the devres mess out

* Split the implementation-agnostic stuff in separate files.
* Make sure that targets using non-default request_irq() pull
  kernel/irq/devres.o
* Introduce new symbols (HAS_IOPORT and HAS_IOMEM) defaulting to positive;
  allow architectures to turn them off (we needed these symbols anyway for
  dependencies of quite a few drivers).
* protect the ioport-related parts of lib/devres.o with CONFIG_HAS_IOPORT.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/Kconfig b/lib/Kconfig
index 9b03581cdecb..384249915047 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -101,9 +101,14 @@ config TEXTSEARCH_FSM
 config PLIST
         boolean
 
-config IOMAP_COPY
+config HAS_IOMEM
         boolean
-        depends on !UML
+        depends on !NO_IOMEM
+        default y
+
+config HAS_IOPORT
+        boolean
+        depends on HAS_IOMEM && !NO_IOPORT
         default y
 
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