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-rw-r--r--arch/arm/kernel/process.c27
1 files changed, 16 insertions, 11 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 971d65c253a9..008e7ce766a7 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -61,8 +61,6 @@ extern void setup_mm_for_reboot(void);
61 61
62static volatile int hlt_counter; 62static volatile int hlt_counter;
63 63
64#include <mach/system.h>
65
66void disable_hlt(void) 64void disable_hlt(void)
67{ 65{
68 hlt_counter++; 66 hlt_counter++;
@@ -181,13 +179,17 @@ void cpu_idle_wait(void)
181EXPORT_SYMBOL_GPL(cpu_idle_wait); 179EXPORT_SYMBOL_GPL(cpu_idle_wait);
182 180
183/* 181/*
184 * This is our default idle handler. We need to disable 182 * This is our default idle handler.
185 * interrupts here to ensure we don't miss a wakeup call.
186 */ 183 */
184
185void (*arm_pm_idle)(void);
186
187static void default_idle(void) 187static void default_idle(void)
188{ 188{
189 if (!need_resched()) 189 if (arm_pm_idle)
190 arch_idle(); 190 arm_pm_idle();
191 else
192 cpu_do_idle();
191 local_irq_enable(); 193 local_irq_enable();
192} 194}
193 195
@@ -215,6 +217,10 @@ void cpu_idle(void)
215 cpu_die(); 217 cpu_die();
216#endif 218#endif
217 219
220 /*
221 * We need to disable interrupts here
222 * to ensure we don't miss a wakeup call.
223 */
218 local_irq_disable(); 224 local_irq_disable();
219#ifdef CONFIG_PL310_ERRATA_769419 225#ifdef CONFIG_PL310_ERRATA_769419
220 wmb(); 226 wmb();
@@ -222,19 +228,18 @@ void cpu_idle(void)
222 if (hlt_counter) { 228 if (hlt_counter) {
223 local_irq_enable(); 229 local_irq_enable();
224 cpu_relax(); 230 cpu_relax();
225 } else { 231 } else if (!need_resched()) {
226 stop_critical_timings(); 232 stop_critical_timings();
227 if (cpuidle_idle_call()) 233 if (cpuidle_idle_call())
228 pm_idle(); 234 pm_idle();
229 start_critical_timings(); 235 start_critical_timings();
230 /* 236 /*
231 * This will eventually be removed - pm_idle 237 * pm_idle functions must always
232 * functions should always return with IRQs 238 * return with IRQs enabled.
233 * enabled.
234 */ 239 */
235 WARN_ON(irqs_disabled()); 240 WARN_ON(irqs_disabled());
241 } else
236 local_irq_enable(); 242 local_irq_enable();
237 }
238 } 243 }
239 leds_event(led_idle_end); 244 leds_event(led_idle_end);
240 rcu_idle_exit(); 245 rcu_idle_exit();