Revision 7f0801e566cc78315e5dc383bf3c3b5b5b436048 authored by Damien Lespiau on 05 February 2015, 19:35:13 UTC, committed by Jani Nikula on 18 March 2015, 08:09:05 UTC
We don't want to end up in a state where we track that the pipe has its primary plane enabled when primary plane registers are programmed with values that look possible but the plane actually disabled. Refuse to read out the fb state when the primary plane isn't enabled. Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Suggested-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reported-by: Andrey Skvortsov <andrej.skvortzov@gmail.com> Reported-by: Steven Rostedt <rostedt@goodmis.org> Reference: http://mid.gmane.org/20150203191507.GA2374@crion86 Tested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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irq_regs.c
/* saved per-CPU IRQ register pointer
*
* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/export.h>
#include <linux/percpu.h>
#include <asm/irq_regs.h>
#ifndef ARCH_HAS_OWN_IRQ_REGS
DEFINE_PER_CPU(struct pt_regs *, __irq_regs);
EXPORT_PER_CPU_SYMBOL(__irq_regs);
#endif
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