tree 4fea21edefa32d8e8e997f3db63f9cefaddff28c
parent b68e9d4581cbb211be3e174d3445b4917aacbcf6
author Al Viro <viro@zeniv.linux.org.uk> 1285015737 +0100
committer Linus Torvalds <torvalds@linux-foundation.org> 1285173230 -0700

powerpc: fix double syscall restarts

Make sigreturn zero regs->trap, make do_signal() do the same on all
paths.  As it is, signal interrupting e.g. read() from fd 512 (==
ERESTARTSYS) with another signal getting unblocked when the first
handler finishes will lead to restart one insn earlier than it ought
to.  Same for multiple signals with in-kernel handlers interrupting
that sucker at the same time.  Same for multiple signals of any kind
interrupting that sucker on 64bit...

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