--- zzzz-none-000/linux-3.10.107/drivers/misc/c2port/core.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/misc/c2port/core.c	2021-02-04 17:41:59.000000000 +0000
@@ -311,6 +311,7 @@
 
 	return sprintf(buf, "%s\n", c2dev->name);
 }
+static DEVICE_ATTR(name, 0444, c2port_show_name, NULL);
 
 static ssize_t c2port_show_flash_blocks_num(struct device *dev,
 				struct device_attribute *attr, char *buf)
@@ -320,6 +321,7 @@
 
 	return sprintf(buf, "%d\n", ops->blocks_num);
 }
+static DEVICE_ATTR(flash_blocks_num, 0444, c2port_show_flash_blocks_num, NULL);
 
 static ssize_t c2port_show_flash_block_size(struct device *dev,
 				struct device_attribute *attr, char *buf)
@@ -329,6 +331,7 @@
 
 	return sprintf(buf, "%d\n", ops->block_size);
 }
+static DEVICE_ATTR(flash_block_size, 0444, c2port_show_flash_block_size, NULL);
 
 static ssize_t c2port_show_flash_size(struct device *dev,
 				struct device_attribute *attr, char *buf)
@@ -338,18 +341,18 @@
 
 	return sprintf(buf, "%d\n", ops->blocks_num * ops->block_size);
 }
+static DEVICE_ATTR(flash_size, 0444, c2port_show_flash_size, NULL);
 
-static ssize_t c2port_show_access(struct device *dev,
-				struct device_attribute *attr, char *buf)
+static ssize_t access_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
 {
 	struct c2port_device *c2dev = dev_get_drvdata(dev);
 
 	return sprintf(buf, "%d\n", c2dev->access);
 }
 
-static ssize_t c2port_store_access(struct device *dev,
-				struct device_attribute *attr,
-				const char *buf, size_t count)
+static ssize_t access_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t count)
 {
 	struct c2port_device *c2dev = dev_get_drvdata(dev);
 	struct c2port_ops *ops = c2dev->ops;
@@ -375,6 +378,7 @@
 
 	return count;
 }
+static DEVICE_ATTR_RW(access);
 
 static ssize_t c2port_store_reset(struct device *dev,
 				struct device_attribute *attr,
@@ -395,6 +399,7 @@
 
 	return count;
 }
+static DEVICE_ATTR(reset, 0200, NULL, c2port_store_reset);
 
 static ssize_t __c2port_show_dev_id(struct c2port_device *dev, char *buf)
 {
@@ -431,6 +436,7 @@
 
 	return ret;
 }
+static DEVICE_ATTR(dev_id, 0444, c2port_show_dev_id, NULL);
 
 static ssize_t __c2port_show_rev_id(struct c2port_device *dev, char *buf)
 {
@@ -467,6 +473,7 @@
 
 	return ret;
 }
+static DEVICE_ATTR(rev_id, 0444, c2port_show_rev_id, NULL);
 
 static ssize_t c2port_show_flash_access(struct device *dev,
 				struct device_attribute *attr, char *buf)
@@ -536,6 +543,8 @@
 
 	return count;
 }
+static DEVICE_ATTR(flash_access, 0644, c2port_show_flash_access,
+		   c2port_store_flash_access);
 
 static ssize_t __c2port_write_flash_erase(struct c2port_device *dev)
 {
@@ -616,6 +625,7 @@
 
 	return count;
 }
+static DEVICE_ATTR(flash_erase, 0200, NULL, c2port_store_flash_erase);
 
 static ssize_t __c2port_read_flash_data(struct c2port_device *dev,
 				char *buffer, loff_t offset, size_t count)
@@ -846,35 +856,40 @@
 
 	return ret;
 }
+/* size is computed at run-time */
+static BIN_ATTR(flash_data, 0644, c2port_read_flash_data,
+		c2port_write_flash_data, 0);
 
 /*
  * Class attributes
  */
+static struct attribute *c2port_attrs[] = {
+	&dev_attr_name.attr,
+	&dev_attr_flash_blocks_num.attr,
+	&dev_attr_flash_block_size.attr,
+	&dev_attr_flash_size.attr,
+	&dev_attr_access.attr,
+	&dev_attr_reset.attr,
+	&dev_attr_dev_id.attr,
+	&dev_attr_rev_id.attr,
+	&dev_attr_flash_access.attr,
+	&dev_attr_flash_erase.attr,
+	NULL,
+};
 
-static struct device_attribute c2port_attrs[] = {
-	__ATTR(name, 0444, c2port_show_name, NULL),
-	__ATTR(flash_blocks_num, 0444, c2port_show_flash_blocks_num, NULL),
-	__ATTR(flash_block_size, 0444, c2port_show_flash_block_size, NULL),
-	__ATTR(flash_size, 0444, c2port_show_flash_size, NULL),
-	__ATTR(access, 0644, c2port_show_access, c2port_store_access),
-	__ATTR(reset, 0200, NULL, c2port_store_reset),
-	__ATTR(dev_id, 0444, c2port_show_dev_id, NULL),
-	__ATTR(rev_id, 0444, c2port_show_rev_id, NULL),
-
-	__ATTR(flash_access, 0644, c2port_show_flash_access,
-					c2port_store_flash_access),
-	__ATTR(flash_erase, 0200, NULL, c2port_store_flash_erase),
-	__ATTR_NULL,
+static struct bin_attribute *c2port_bin_attrs[] = {
+	&bin_attr_flash_data,
+	NULL,
 };
 
-static struct bin_attribute c2port_bin_attrs = {
-	.attr	= {
-		.name	= "flash_data",
-		.mode	= 0644
-	},
-	.read	= c2port_read_flash_data,
-	.write	= c2port_write_flash_data,
-	/* .size is computed at run-time */
+static const struct attribute_group c2port_group = {
+	.attrs = c2port_attrs,
+	.bin_attrs = c2port_bin_attrs,
+};
+
+static const struct attribute_group *c2port_groups[] = {
+	&c2port_group,
+	NULL,
 };
 
 /*
@@ -907,9 +922,11 @@
 		goto error_idr_alloc;
 	c2dev->id = ret;
 
+	bin_attr_flash_data.size = ops->blocks_num * ops->block_size;
+
 	c2dev->dev = device_create(c2port_class, NULL, 0, c2dev,
 				   "c2port%d", c2dev->id);
-	if (unlikely(IS_ERR(c2dev->dev))) {
+	if (IS_ERR(c2dev->dev)) {
 		ret = PTR_ERR(c2dev->dev);
 		goto error_device_create;
 	}
@@ -919,12 +936,6 @@
 	c2dev->ops = ops;
 	mutex_init(&c2dev->mutex);
 
-	/* Create binary file */
-	c2port_bin_attrs.size = ops->blocks_num * ops->block_size;
-	ret = device_create_bin_file(c2dev->dev, &c2port_bin_attrs);
-	if (unlikely(ret))
-		goto error_device_create_bin_file;
-
 	/* By default C2 port access is off */
 	c2dev->access = c2dev->flash_access = 0;
 	ops->access(c2dev, 0);
@@ -937,9 +948,6 @@
 
 	return c2dev;
 
-error_device_create_bin_file:
-	device_destroy(c2port_class, 0);
-
 error_device_create:
 	spin_lock_irq(&c2port_idr_lock);
 	idr_remove(&c2port_idr, c2dev->id);
@@ -959,7 +967,6 @@
 
 	dev_info(c2dev->dev, "C2 port %s removed\n", c2dev->name);
 
-	device_remove_bin_file(c2dev->dev, &c2port_bin_attrs);
 	spin_lock_irq(&c2port_idr_lock);
 	idr_remove(&c2port_idr, c2dev->id);
 	spin_unlock_irq(&c2port_idr_lock);
@@ -984,7 +991,7 @@
 		printk(KERN_ERR "c2port: failed to allocate class\n");
 		return PTR_ERR(c2port_class);
 	}
-	c2port_class->dev_attrs = c2port_attrs;
+	c2port_class->dev_groups = c2port_groups;
 
 	return 0;
 }