nvmem: core: calculate bin_attribute size through bin_size()

Stop abusing the is_bin_visible() callback to calculate the attribute
size. Instead use the new, dedicated bin_size() one.

Signed-off-by: Thomas Weißschuh <[email protected]>
Acked-by: Krzysztof Wilczyński <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: t-8ch

drivers/nvmem/core.c

@@ -303,11 +303,19 @@ static umode_t nvmem_bin_attr_is_visible(struct kobject *kobj,
 	struct device *dev = kobj_to_dev(kobj);
 	struct nvmem_device *nvmem = to_nvmem_device(dev);
 
-	attr->size = nvmem->size;
-
 	return nvmem_bin_attr_get_umode(nvmem);
 }
 
+static size_t nvmem_bin_attr_size(struct kobject *kobj,
+				  const struct bin_attribute *attr,
+				  int i)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct nvmem_device *nvmem = to_nvmem_device(dev);
+
+	return nvmem->size;
+}
+
 static umode_t nvmem_attr_is_visible(struct kobject *kobj,
 				     struct attribute *attr, int i)
 {
@@ -383,6 +391,7 @@ static const struct attribute_group nvmem_bin_group = {
 	.bin_attrs	= nvmem_bin_attributes,
 	.attrs		= nvmem_attrs,
 	.is_bin_visible = nvmem_bin_attr_is_visible,
+	.bin_size	= nvmem_bin_attr_size,
 	.is_visible	= nvmem_attr_is_visible,
 };