commit 5029615e25dc5040beb065f36743c127a8e51497
author Max Filippov <jcmvbkbc@gmail.com> Thu Sep 24 23:11:53 2015 +0300
committer Max Filippov <jcmvbkbc@gmail.com> Mon Nov 02 18:02:47 2015 +0300
tree 8b77e020c58e01175587f5267ab9ab8b223c3652
parent 6a13feb9c82803e2b815eca72fa7a9f5561d7861

xtensa: fixes for configs without loop option

Build-time fixes:
- make lbeg/lend/lcount save/restore conditional on kernel entry;
- don't clear lcount in platform_restart functions unconditionally.

Run-time fixes:
- use correct end of range register in __endla paired with __loopt, not
  the unused temporary register. This fixes .bss zero-initialization.
  Update comments in asmmacro.h;
- don't clobber a10 in the usercopy that leads to access to unmapped
  memory.

Cc: <stable@vger.kernel.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>