BACKPORT: ARM: 7473/1: deal with handlerless restarts without leaving the kernel

(cherry pick from commit 81783786d5cf4aa0d3e15bb0fac856aa8ebf1a76)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Bug: 9674955
Bug: 25773781
Change-Id: I5a2eb89f131a5af0cccaeb09b6d2656aafe2ad54
2 files changed