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Diffstat (limited to 'kernel/spinlock.c')
-rw-r--r--kernel/spinlock.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/kernel/spinlock.c b/kernel/spinlock.c
index 0375fcd5921d..d1b810782bc4 100644
--- a/kernel/spinlock.c
+++ b/kernel/spinlock.c
@@ -179,16 +179,16 @@ EXPORT_SYMBOL(_write_lock);
179#define BUILD_LOCK_OPS(op, locktype) \ 179#define BUILD_LOCK_OPS(op, locktype) \
180void __lockfunc _##op##_lock(locktype##_t *lock) \ 180void __lockfunc _##op##_lock(locktype##_t *lock) \
181{ \ 181{ \
182 preempt_disable(); \
183 for (;;) { \ 182 for (;;) { \
183 preempt_disable(); \
184 if (likely(_raw_##op##_trylock(lock))) \ 184 if (likely(_raw_##op##_trylock(lock))) \
185 break; \ 185 break; \
186 preempt_enable(); \ 186 preempt_enable(); \
187 \
187 if (!(lock)->break_lock) \ 188 if (!(lock)->break_lock) \
188 (lock)->break_lock = 1; \ 189 (lock)->break_lock = 1; \
189 while (!op##_can_lock(lock) && (lock)->break_lock) \ 190 while (!op##_can_lock(lock) && (lock)->break_lock) \
190 cpu_relax(); \ 191 cpu_relax(); \
191 preempt_disable(); \
192 } \ 192 } \
193 (lock)->break_lock = 0; \ 193 (lock)->break_lock = 0; \
194} \ 194} \
@@ -199,19 +199,18 @@ unsigned long __lockfunc _##op##_lock_irqsave(locktype##_t *lock) \
199{ \ 199{ \
200 unsigned long flags; \ 200 unsigned long flags; \
201 \ 201 \
202 preempt_disable(); \
203 for (;;) { \ 202 for (;;) { \
203 preempt_disable(); \
204 local_irq_save(flags); \ 204 local_irq_save(flags); \
205 if (likely(_raw_##op##_trylock(lock))) \ 205 if (likely(_raw_##op##_trylock(lock))) \
206 break; \ 206 break; \
207 local_irq_restore(flags); \ 207 local_irq_restore(flags); \
208 \
209 preempt_enable(); \ 208 preempt_enable(); \
209 \
210 if (!(lock)->break_lock) \ 210 if (!(lock)->break_lock) \
211 (lock)->break_lock = 1; \ 211 (lock)->break_lock = 1; \
212 while (!op##_can_lock(lock) && (lock)->break_lock) \ 212 while (!op##_can_lock(lock) && (lock)->break_lock) \
213 cpu_relax(); \ 213 cpu_relax(); \
214 preempt_disable(); \
215 } \ 214 } \
216 (lock)->break_lock = 0; \ 215 (lock)->break_lock = 0; \
217 return flags; \ 216 return flags; \