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-rw-r--r--drivers/base/class.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/base/class.c b/drivers/base/class.c
index 5667c2f02c51..cc5e28c8885c 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -295,6 +295,12 @@ int class_for_each_device(struct class *class, struct device *start,
295 295
296 if (!class) 296 if (!class)
297 return -EINVAL; 297 return -EINVAL;
298 if (!class->p) {
299 WARN(1, "%s called for class '%s' before it was initialized",
300 __func__, class->name);
301 return -EINVAL;
302 }
303
298 mutex_lock(&class->p->class_mutex); 304 mutex_lock(&class->p->class_mutex);
299 list_for_each_entry(dev, &class->p->class_devices, node) { 305 list_for_each_entry(dev, &class->p->class_devices, node) {
300 if (start) { 306 if (start) {
@@ -344,6 +350,11 @@ struct device *class_find_device(struct class *class, struct device *start,
344 350
345 if (!class) 351 if (!class)
346 return NULL; 352 return NULL;
353 if (!class->p) {
354 WARN(1, "%s called for class '%s' before it was initialized",
355 __func__, class->name);
356 return NULL;
357 }
347 358
348 mutex_lock(&class->p->class_mutex); 359 mutex_lock(&class->p->class_mutex);
349 list_for_each_entry(dev, &class->p->class_devices, node) { 360 list_for_each_entry(dev, &class->p->class_devices, node) {