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Diffstat (limited to 'arch/s390/appldata/appldata_base.c')
-rw-r--r--arch/s390/appldata/appldata_base.c32
1 files changed, 16 insertions, 16 deletions
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index aeb3cff95f63..1dfc7100c7ee 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -98,7 +98,7 @@ static DECLARE_WORK(appldata_work, appldata_work_fn);
98/* 98/*
99 * Ops list 99 * Ops list
100 */ 100 */
101static DEFINE_SPINLOCK(appldata_ops_lock); 101static DEFINE_MUTEX(appldata_ops_mutex);
102static LIST_HEAD(appldata_ops_list); 102static LIST_HEAD(appldata_ops_list);
103 103
104 104
@@ -129,14 +129,14 @@ static void appldata_work_fn(struct work_struct *work)
129 129
130 i = 0; 130 i = 0;
131 get_online_cpus(); 131 get_online_cpus();
132 spin_lock(&appldata_ops_lock); 132 mutex_lock(&appldata_ops_mutex);
133 list_for_each(lh, &appldata_ops_list) { 133 list_for_each(lh, &appldata_ops_list) {
134 ops = list_entry(lh, struct appldata_ops, list); 134 ops = list_entry(lh, struct appldata_ops, list);
135 if (ops->active == 1) { 135 if (ops->active == 1) {
136 ops->callback(ops->data); 136 ops->callback(ops->data);
137 } 137 }
138 } 138 }
139 spin_unlock(&appldata_ops_lock); 139 mutex_unlock(&appldata_ops_mutex);
140 put_online_cpus(); 140 put_online_cpus();
141} 141}
142 142
@@ -338,7 +338,7 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
338 struct list_head *lh; 338 struct list_head *lh;
339 339
340 found = 0; 340 found = 0;
341 spin_lock(&appldata_ops_lock); 341 mutex_lock(&appldata_ops_mutex);
342 list_for_each(lh, &appldata_ops_list) { 342 list_for_each(lh, &appldata_ops_list) {
343 tmp_ops = list_entry(lh, struct appldata_ops, list); 343 tmp_ops = list_entry(lh, struct appldata_ops, list);
344 if (&tmp_ops->ctl_table[2] == ctl) { 344 if (&tmp_ops->ctl_table[2] == ctl) {
@@ -346,15 +346,15 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
346 } 346 }
347 } 347 }
348 if (!found) { 348 if (!found) {
349 spin_unlock(&appldata_ops_lock); 349 mutex_unlock(&appldata_ops_mutex);
350 return -ENODEV; 350 return -ENODEV;
351 } 351 }
352 ops = ctl->data; 352 ops = ctl->data;
353 if (!try_module_get(ops->owner)) { // protect this function 353 if (!try_module_get(ops->owner)) { // protect this function
354 spin_unlock(&appldata_ops_lock); 354 mutex_unlock(&appldata_ops_mutex);
355 return -ENODEV; 355 return -ENODEV;
356 } 356 }
357 spin_unlock(&appldata_ops_lock); 357 mutex_unlock(&appldata_ops_mutex);
358 358
359 if (!*lenp || *ppos) { 359 if (!*lenp || *ppos) {
360 *lenp = 0; 360 *lenp = 0;
@@ -378,11 +378,11 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
378 return -EFAULT; 378 return -EFAULT;
379 } 379 }
380 380
381 spin_lock(&appldata_ops_lock); 381 mutex_lock(&appldata_ops_mutex);
382 if ((buf[0] == '1') && (ops->active == 0)) { 382 if ((buf[0] == '1') && (ops->active == 0)) {
383 // protect work queue callback 383 // protect work queue callback
384 if (!try_module_get(ops->owner)) { 384 if (!try_module_get(ops->owner)) {
385 spin_unlock(&appldata_ops_lock); 385 mutex_unlock(&appldata_ops_mutex);
386 module_put(ops->owner); 386 module_put(ops->owner);
387 return -ENODEV; 387 return -ENODEV;
388 } 388 }
@@ -407,7 +407,7 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
407 "failed with rc=%d\n", ops->name, rc); 407 "failed with rc=%d\n", ops->name, rc);
408 module_put(ops->owner); 408 module_put(ops->owner);
409 } 409 }
410 spin_unlock(&appldata_ops_lock); 410 mutex_unlock(&appldata_ops_mutex);
411out: 411out:
412 *lenp = len; 412 *lenp = len;
413 *ppos += len; 413 *ppos += len;
@@ -433,9 +433,9 @@ int appldata_register_ops(struct appldata_ops *ops)
433 if (!ops->ctl_table) 433 if (!ops->ctl_table)
434 return -ENOMEM; 434 return -ENOMEM;
435 435
436 spin_lock(&appldata_ops_lock); 436 mutex_lock(&appldata_ops_mutex);
437 list_add(&ops->list, &appldata_ops_list); 437 list_add(&ops->list, &appldata_ops_list);
438 spin_unlock(&appldata_ops_lock); 438 mutex_unlock(&appldata_ops_mutex);
439 439
440 ops->ctl_table[0].procname = appldata_proc_name; 440 ops->ctl_table[0].procname = appldata_proc_name;
441 ops->ctl_table[0].maxlen = 0; 441 ops->ctl_table[0].maxlen = 0;
@@ -452,9 +452,9 @@ int appldata_register_ops(struct appldata_ops *ops)
452 goto out; 452 goto out;
453 return 0; 453 return 0;
454out: 454out:
455 spin_lock(&appldata_ops_lock); 455 mutex_lock(&appldata_ops_mutex);
456 list_del(&ops->list); 456 list_del(&ops->list);
457 spin_unlock(&appldata_ops_lock); 457 mutex_unlock(&appldata_ops_mutex);
458 kfree(ops->ctl_table); 458 kfree(ops->ctl_table);
459 return -ENOMEM; 459 return -ENOMEM;
460} 460}
@@ -466,9 +466,9 @@ out:
466 */ 466 */
467void appldata_unregister_ops(struct appldata_ops *ops) 467void appldata_unregister_ops(struct appldata_ops *ops)
468{ 468{
469 spin_lock(&appldata_ops_lock); 469 mutex_lock(&appldata_ops_mutex);
470 list_del(&ops->list); 470 list_del(&ops->list);
471 spin_unlock(&appldata_ops_lock); 471 mutex_unlock(&appldata_ops_mutex);
472 unregister_sysctl_table(ops->sysctl_header); 472 unregister_sysctl_table(ops->sysctl_header);
473 kfree(ops->ctl_table); 473 kfree(ops->ctl_table);
474} 474}