perf/x86: Fix raw_spin_unlock_irqrestore() usage

Use raw_spin_unlock_irqrestore() as equivalent to
raw_spin_lock_irqsave().

Signed-off-by: Robert Richter <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

Author: Robert Richter

arch/x86/kernel/cpu/perf_event_intel.c

@@ -1169,7 +1169,7 @@ __intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
 		 */
 		c = &unconstrained;
 	} else if (intel_try_alt_er(event, orig_idx)) {
-		raw_spin_unlock(&era->lock);
+		raw_spin_unlock_irqrestore(&era->lock, flags);
 		goto again;
 	}
 	raw_spin_unlock_irqrestore(&era->lock, flags);