git: gpio_intel: Add workaround for concurrent GPIO register access erratum.

Sat Apr 16 02:35:34 PDT 2016

commit 4ea42c7727eac725b2ba457624cd80eac3e15520
Author: Imre VadÃ¡sz <imre at vdsz.com>
Date:   Fri Apr 15 00:02:18 2016 +0200

    gpio_intel: Add workaround for concurrent GPIO register access erratum.
    
    * This implements the suggested workaround, using a global lock for GPIO
      register accesses for Cherry Trail erratum:
    
      CHT34   Multiple Drivers That Access the GPIO Registers Concurrently May
              Result in Unpredictable System Behaviour

Summary of changes:
 sys/bus/gpio/gpio_intel/gpio_cherryview.c | 70 +++++++++++++++++++++----------
 1 file changed, 49 insertions(+), 21 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/4ea42c7727eac725b2ba457624cd80eac3e15520


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