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      genirq: Split irq_set_affinity() so it can be called with lock held. · c2d0c555
      David Daney 提交于
      The .irq_cpu_online() and .irq_cpu_offline() functions may need to
      adjust affinity, but they are called with the descriptor lock held.
      Create __irq_set_affinity_locked() which is called with the lock held.
      Make irq_set_affinity() just a wrapper that acquires the lock.
      
      [ tglx: Changed the argument to irq_data, added a !desc check and
              moved the !irq_set_affinity check where it belongs ]
      Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
      Cc: linux-mips@linux-mips.org
      Cc: ralf@linux-mips.org
      LKML-Reference: <1301081931-11240-4-git-send-email-ddaney@caviumnetworks.com>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      c2d0c555