bug.h: Fix up CONFIG_BUG=n implicit function declarations.
Commit 2603efa31a
("bug.h: Fix up powerpc build regression") corrected
the powerpc build case and extended the __ASSEMBLY__ guards, but it also
got caught in pre-processor hell accidentally matching the else case of
CONFIG_BUG resulting in the BUG disabled case tripping up on
-Werror=implicit-function-declaration.
It's not possible to __ASSEMBLY__ guard the entire file as architecture
code needs to get at the BUGFLAG_WARNING definition in the GENERIC_BUG
case, but the rest of the CONFIG_BUG=y/n case needs to be guarded.
Rather than littering endless __ASSEMBLY__ checks in each of the if/else
cases we just move the BUGFLAG definitions up under their own
GENERIC_BUG test and then shove everything else under one big
__ASSEMBLY__ guard.
Build tested on all of x86 CONFIG_BUG=y, CONFIG_BUG=n, powerpc (due to
it's dependence on BUGFLAG definitions in assembly code), and sh (due to
not bringing in linux/kernel.h to satisfy the taint flag definitions used
by the generic bug code).
Hopefully that's the end of the corner cases and I can abstain from ever
having to touch this infernal header ever again.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Fengguang Wu <wfg@linux.intel.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
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@ -3,10 +3,18 @@
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#include <linux/compiler.h>
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#include <linux/compiler.h>
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#ifdef CONFIG_GENERIC_BUG
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#define BUGFLAG_WARNING (1 << 0)
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#define BUGFLAG_TAINT(taint) (BUGFLAG_WARNING | ((taint) << 8))
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#define BUG_GET_TAINT(bug) ((bug)->flags >> 8)
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#endif
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#ifndef __ASSEMBLY__
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#include <linux/kernel.h>
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#ifdef CONFIG_BUG
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#ifdef CONFIG_BUG
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#ifdef CONFIG_GENERIC_BUG
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#ifdef CONFIG_GENERIC_BUG
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#ifndef __ASSEMBLY__
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struct bug_entry {
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struct bug_entry {
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#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
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#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
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unsigned long bug_addr;
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unsigned long bug_addr;
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@ -23,17 +31,8 @@ struct bug_entry {
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#endif
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#endif
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unsigned short flags;
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unsigned short flags;
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};
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};
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#endif /* __ASSEMBLY__ */
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#define BUGFLAG_WARNING (1 << 0)
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#define BUGFLAG_TAINT(taint) (BUGFLAG_WARNING | ((taint) << 8))
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#define BUG_GET_TAINT(bug) ((bug)->flags >> 8)
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#endif /* CONFIG_GENERIC_BUG */
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#endif /* CONFIG_GENERIC_BUG */
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#ifndef __ASSEMBLY__
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#include <linux/kernel.h>
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/*
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/*
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* Don't use BUG() or BUG_ON() unless there's really no way out; one
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* Don't use BUG() or BUG_ON() unless there's really no way out; one
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* example might be detecting data structure corruption in the middle
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* example might be detecting data structure corruption in the middle
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