From: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
Kernel users don't have any means of checking the names of nvmem
devices. Add a routine that returns the name of the nvmem provider.
This will be useful for nvmem notifier subscribers - otherwise they
can't check what device is being added/removed.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
---
drivers/nvmem/core.c | 13 +++++++++++++
include/linux/nvmem-consumer.h | 8 ++++++++
2 files changed, 21 insertions(+)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 89b91f73d08a..364ee16e7d6a 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -1144,6 +1144,19 @@ int nvmem_device_write(struct nvmem_device *nvmem,
}
EXPORT_SYMBOL_GPL(nvmem_device_write);
+/**
+ * nvmem_dev_name() - Get the name of a given nvmem device.
+ *
+ * @nvmem: nvmem device.
+ *
+ * Return: name of the nvmem device.
+ */
+const char *nvmem_dev_name(struct nvmem_device *nvmem)
+{
+ return dev_name(&nvmem->dev);
+}
+EXPORT_SYMBOL_GPL(nvmem_dev_name);
+
static int __init nvmem_init(void)
{
return bus_register(&nvmem_bus_type);
diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index 7e9fb5a19d91..1313da6731ff 100644
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -43,6 +43,8 @@ int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset,
int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset,
size_t bytes, void *buf);
+const char *nvmem_dev_name(struct nvmem_device *nvmem);
+
#else
static inline struct nvmem_cell *nvmem_cell_get(struct device *dev,
@@ -117,6 +119,12 @@ static inline int nvmem_device_write(struct nvmem_device *nvmem,
{
return -ENOSYS;
}
+
+static inline const char *nvmem_dev_name(struct nvmem_device *nvmem)
+{
+ return NULL;
+}
+
#endif /* CONFIG_NVMEM */
#if IS_ENABLED(CONFIG_NVMEM) && IS_ENABLED(CONFIG_OF)
--
2.18.0
