tree 96cb815dfb70ff3a9c8b07afdbc5f0b3a71fdb95
parent cbd1de2e8e46207cead11034f92ea8a018b11189
author Max Filippov <jcmvbkbc@gmail.com> 1381963343 +0400
committer Chris Zankel <chris@zankel.net> 1389723597 -0800

xtensa: clean up do_interrupt/do_IRQ

- set up irq registers and call irq_enter/irq_exit once for each kernel
  entry due to interrupt;
- don't attempt to clear current IRQ in the do_interrupt, IRQ handler
  will take care of it;
- find pending interrupt with highest priority before every ISR
  invocation.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>