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nvmem: provide nvmem_dev_name() 

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 future nvmem notifier subscribers - otherwise
they can't check what device is being added/removed.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Bartosz Golaszewski 2018-09-21 06:40:03 -07:00 committed by Greg Kroah-Hartman
parent 96d08fb43e
commit d7b9fd1669
2 changed files with 21 additions and 0 deletions
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13
drivers/nvmem/core.c
View File

@ -1343,6 +1343,19 @@ 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);

8
include/linux/nvmem-consumer.h
View File

@ -55,6 +55,8 @@ ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem,
int nvmem_device_cell_write(struct nvmem_device *nvmem,
struct nvmem_cell_info *info, void *buf);
const char *nvmem_dev_name(struct nvmem_device *nvmem);
#else
static inline struct nvmem_cell *nvmem_cell_get(struct device *dev,
@ -143,6 +145,12 @@ 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)