Export the size of the nvmem device. NVMEM layout drivers might need it
and might not have access to the device which is registering the NVMEM
device.
Signed-off-by: Michael Walle <[email protected]>
---
drivers/nvmem/core.c | 13 +++++++++++++
include/linux/nvmem-consumer.h | 6 ++++++
2 files changed, 19 insertions(+)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index cbfbe6264e6c..f46ae358fe88 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -2031,6 +2031,19 @@ const char *nvmem_dev_name(struct nvmem_device *nvmem)
}
EXPORT_SYMBOL_GPL(nvmem_dev_name);
+/**
+ * nvmem_device_size() - Get the size of a given nvmem device.
+ *
+ * @nvmem: nvmem device.
+ *
+ * Return: size of the nvmem device.
+ */
+size_t nvmem_device_size(struct nvmem_device *nvmem)
+{
+ return nvmem->size;
+}
+EXPORT_SYMBOL_GPL(nvmem_device_size);
+
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 761b8ef78adc..6b2a80a5fdd5 100644
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -90,6 +90,7 @@ ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem,
struct nvmem_cell_info *info, void *buf);
int nvmem_device_cell_write(struct nvmem_device *nvmem,
struct nvmem_cell_info *info, void *buf);
+size_t nvmem_device_size(struct nvmem_device *nvmem);
const char *nvmem_dev_name(struct nvmem_device *nvmem);
@@ -219,6 +220,11 @@ static inline int nvmem_device_write(struct nvmem_device *nvmem,
return -EOPNOTSUPP;
}
+static inline size_t nvmem_device_size(struct nvmem_device *nvmem)
+{
+ return 0;
+}
+
static inline const char *nvmem_dev_name(struct nvmem_device *nvmem)
{
return NULL;
--
2.30.2