[PATCH] bogus BUILD_BUG_ON() in bpa_iommu
BUILD_BUG_ON(1) is asking for trouble (and getting it) when used in that
manner - dead code elimination happens after we parse it and invalid
type is invalid type, dead code or not.
It might be version-dependent, but at least 4.0.1 refuses to accept
that.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ppc64/kernel/bpa_iommu.c b/arch/ppc64/kernel/bpa_iommu.c
index f33a7bc..507eb9d 100644
--- a/arch/ppc64/kernel/bpa_iommu.c
+++ b/arch/ppc64/kernel/bpa_iommu.c
@@ -99,7 +99,11 @@
break;
default: /* not a known compile time constant */
- BUILD_BUG_ON(1);
+ {
+ /* BUILD_BUG_ON() is not usable here */
+ extern void __get_iost_entry_bad_page_size(void);
+ __get_iost_entry_bad_page_size();
+ }
break;
}