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Merge tag 'arc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

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Pull arch/arc updates from Vineet Gupta:
 "Minor updates for ARC for 3.19"

* tag 'arc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: rename default defconfig
  ARC: [nsimosci] move peripherals to match model to FPGA
  ARC: document memory clobber in irq control macros
  ARC: R-M-W assist locks only needed for !LLSC
  ARC: add power management options
This commit is contained in:
Linus Torvalds
2014-12-18 16:26:41 -08:00
parent 39757e7351 7a70bf797a
commit 22943a6a6b
7 changed files with 22 additions and 73 deletions
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9
arch/arc/include/asm/irqflags.h
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@@ -41,6 +41,15 @@
/******************************************************************
* IRQ Control Macros
*
* All of them have "memory" clobber (compiler barrier) which is needed to
* ensure that LD/ST requiring irq safetly (R-M-W when LLSC is not available)
* are redone after IRQs are re-enabled (and gcc doesn't reuse stale register)
*
* Noted at the time of Abilis Timer List corruption
* Orig Bug + Rejected solution : https://lkml.org/lkml/2013/3/29/67
* Reasoning : https://lkml.org/lkml/2013/4/8/15
*
******************************************************************/
/*