AcoSail/kernel_optimize_test
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[PATCH] bogus BUILD_BUG_ON() in bpa_iommu

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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>
This commit is contained in:
Al Viro 2005-09-30 03:36:50 +01:00 committed by Linus Torvalds
parent 4735885701
commit c215a16a4a
1 changed files with 5 additions and 1 deletions
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arch/ppc64/kernel/bpa_iommu.c
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@ -99,7 +99,11 @@ get_iost_entry(unsigned long iopt_base, unsigned long io_address, unsigned page_
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;
}