diff options
Diffstat (limited to 'drivers/counter/counter-core.c')
| -rw-r--r-- | drivers/counter/counter-core.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/counter/counter-core.c b/drivers/counter/counter-core.c index 09c77afb33ca..50bd30ba3d03 100644 --- a/drivers/counter/counter-core.c +++ b/drivers/counter/counter-core.c @@ -31,10 +31,11 @@ struct counter_device_allochelper { struct counter_device counter; /* - * This is cache line aligned to ensure private data behaves like if it - * were kmalloced separately. + * This ensures private data behaves like if it were kmalloced + * separately. Also ensures the minimum alignment for safe DMA + * operations (which may or may not mean cache alignment). */ - unsigned long privdata[] ____cacheline_aligned; + unsigned long privdata[] __aligned(ARCH_DMA_MINALIGN); }; static void counter_device_release(struct device *dev) @@ -48,12 +49,12 @@ static void counter_device_release(struct device *dev) kfree(container_of(counter, struct counter_device_allochelper, counter)); } -static struct device_type counter_device_type = { +static const struct device_type counter_device_type = { .name = "counter_device", .release = counter_device_release, }; -static struct bus_type counter_bus_type = { +static const struct bus_type counter_bus_type = { .name = "counter", .dev_name = "counter", }; @@ -73,7 +74,7 @@ void *counter_priv(const struct counter_device *const counter) return &ch->privdata; } -EXPORT_SYMBOL_NS_GPL(counter_priv, COUNTER); +EXPORT_SYMBOL_NS_GPL(counter_priv, "COUNTER"); /** * counter_alloc - allocate a counter_device @@ -133,13 +134,13 @@ err_ida_alloc: return NULL; } -EXPORT_SYMBOL_NS_GPL(counter_alloc, COUNTER); +EXPORT_SYMBOL_NS_GPL(counter_alloc, "COUNTER"); void counter_put(struct counter_device *counter) { put_device(&counter->dev); } -EXPORT_SYMBOL_NS_GPL(counter_put, COUNTER); +EXPORT_SYMBOL_NS_GPL(counter_put, "COUNTER"); /** * counter_add - complete registration of a counter @@ -166,7 +167,7 @@ int counter_add(struct counter_device *counter) /* implies device_add(dev) */ return cdev_device_add(&counter->chrdev, dev); } -EXPORT_SYMBOL_NS_GPL(counter_add, COUNTER); +EXPORT_SYMBOL_NS_GPL(counter_add, "COUNTER"); /** * counter_unregister - unregister Counter from the system @@ -188,7 +189,7 @@ void counter_unregister(struct counter_device *const counter) mutex_unlock(&counter->ops_exist_lock); } -EXPORT_SYMBOL_NS_GPL(counter_unregister, COUNTER); +EXPORT_SYMBOL_NS_GPL(counter_unregister, "COUNTER"); static void devm_counter_release(void *counter) { @@ -223,7 +224,7 @@ struct counter_device *devm_counter_alloc(struct device *dev, size_t sizeof_priv return counter; } -EXPORT_SYMBOL_NS_GPL(devm_counter_alloc, COUNTER); +EXPORT_SYMBOL_NS_GPL(devm_counter_alloc, "COUNTER"); /** * devm_counter_add - complete registration of a counter @@ -244,7 +245,7 @@ int devm_counter_add(struct device *dev, return devm_add_action_or_reset(dev, devm_counter_release, counter); } -EXPORT_SYMBOL_NS_GPL(devm_counter_add, COUNTER); +EXPORT_SYMBOL_NS_GPL(devm_counter_add, "COUNTER"); #define COUNTER_DEV_MAX 256 |