diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2021-12-30 16:02:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-30 17:44:06 +0100 |
| commit | 5207fb2f311b0c45a9abfa1c84b7a7b657ffa550 (patch) | |
| tree | 316ddaf26e9fda72b94b5e2a56cd3632e7042b54 | |
| parent | 0880603c8401505d237c8bfd29538a064e3aaf0f (diff) | |
counter: Provide a wrapper to access device private data
For now this just wraps accessing struct counter_device::priv. However
this is about to change and converting drivers to this helper
individually makes fixing device lifetime issues result in easier to
review patches.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20211230150300.72196-5-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/counter/counter-core.c | 12 | ||||
| -rw-r--r-- | include/linux/counter.h | 2 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/counter/counter-core.c b/drivers/counter/counter-core.c index f053a43c6c04..00c41f28c101 100644 --- a/drivers/counter/counter-core.c +++ b/drivers/counter/counter-core.c @@ -46,6 +46,18 @@ static struct bus_type counter_bus_type = { static dev_t counter_devt; /** + * counter_priv - access counter device private data + * @counter: counter device + * + * Get the counter device private data + */ +void *counter_priv(const struct counter_device *const counter) +{ + return counter->priv; +} +EXPORT_SYMBOL_GPL(counter_priv); + +/** * counter_register - register Counter to the system * @counter: pointer to Counter to register * diff --git a/include/linux/counter.h b/include/linux/counter.h index dfbde2808998..627f1757f6bb 100644 --- a/include/linux/counter.h +++ b/include/linux/counter.h @@ -329,6 +329,8 @@ struct counter_device { struct mutex ops_exist_lock; }; +void *counter_priv(const struct counter_device *const counter); + int counter_register(struct counter_device *const counter); void counter_unregister(struct counter_device *const counter); int devm_counter_register(struct device *dev, |