objtool: Fix validate_branch() return codes
The validate_branch() function should never return a negative value. Errors are treated as warnings so that even if something goes wrong, objtool does its best to generate ORC data for the rest of the file. Signed-off-by: NJosh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: baa41469 ("objtool: Implement stack validation 2.0") Link: http://lkml.kernel.org/r/d86671cfde823b50477cd2f6f548dfe54871e24d.1502401017.git.jpoimboe@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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