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ARM: arm-soc fixes for 3.9 

Only one remaining fix for arm-soc platforms at this time, a small
 bugfix for cpu hotplug on highbank platforms that has become much
 easier to hit as of late. Details in the patch description, but it's
 small and well-contained and definitely impacts users of the platform,
 so 3.9 seems appropriate.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Only one remaining fix for arm-soc platforms at this time, a small
  bugfix for cpu hotplug on highbank platforms that has become much
  easier to hit as of late.

  Details in the patch description, but it's small and well-contained
  and definitely impacts users of the platform, so 3.9 seems
  appropriate."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: highbank: fix cache flush ordering for cpu hotplug
This commit is contained in:
Linus Torvalds 2013-04-19 11:38:36 -07:00
parent 0f177f8739 73053d973d
commit f068f5e158
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm/mach-highbank/hotplug.c
View File

@ -28,13 +28,11 @@ extern void secondary_startup(void);
*/ */
void __ref highbank_cpu_die(unsigned int cpu) void __ref highbank_cpu_die(unsigned int cpu)
{ {
flush_cache_all();
highbank_set_cpu_jump(cpu, phys_to_virt(0)); highbank_set_cpu_jump(cpu, phys_to_virt(0));
flush_cache_louis();
highbank_set_core_pwr(); highbank_set_core_pwr();
cpu_do_idle(); while (1)
cpu_do_idle();
/* We should never return from idle */
panic("highbank: cpu %d unexpectedly exit from shutdown\n", cpu);
} }