Maciej W. Rozycki 9dbca9e8a9 MIPS: Fix unaligned PC interpretation in `compute_return_epc' ...

commit 11a3799dbe upstream.

Fix a regression introduced with commit fb6883e580 ("MIPS: microMIPS:
Support handling of delay slots.") and defer to `__compute_return_epc'
if the ISA bit is set in EPC with non-MIPS16, non-microMIPS hardware,
which will then arrange for a SIGBUS due to an unaligned instruction
reference.  Returning EPC here is never correct as the API defines this
function's result to be either a negative error code on failure or one
of 0 and BRANCH_LIKELY_TAKEN on success.

Fixes: fb6883e580 ("MIPS: microMIPS: Support handling of delay slots.")
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16395/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-07-27 15:06:08 -07:00

..

asm

MIPS: Fix unaligned PC interpretation in `compute_return_epc'

2017-07-27 15:06:08 -07:00

uapi/asm

MIPS: Fix uapi include in exported asm/siginfo.h

2016-06-07 18:14:30 -07:00