diff --git a/samples/firmware_class/firmware_sample_driver.c b/samples/firmware_class/firmware_sample_driver.c
index ff0f2f2..165cff9 100644
--- a/samples/firmware_class/firmware_sample_driver.c
+++ b/samples/firmware_class/firmware_sample_driver.c
@@ -12,8 +12,7 @@
 #include <linux/init.h>
 #include <linux/device.h>
 #include <linux/string.h>
-
-#include "linux/firmware.h"
+#include <linux/firmware.h>
 
 static struct device ghost_device = {
 	.bus_id    = "ghost0",
@@ -31,11 +30,14 @@
 static void sample_probe_default(void)
 {
 	/* uses the default method to get the firmware */
-        const struct firmware *fw_entry;
-	printk(KERN_INFO "firmware_sample_driver: a ghost device got inserted :)\n");
+	const struct firmware *fw_entry;
+	int retval;
 
-        if(request_firmware(&fw_entry, "sample_driver_fw", &ghost_device)!=0)
-	{
+	printk(KERN_INFO "firmware_sample_driver: "
+		"a ghost device got inserted :)\n");
+
+	retval = request_firmware(&fw_entry, "sample_driver_fw", &ghost_device);
+	if (retval) {
 		printk(KERN_ERR
 		       "firmware_sample_driver: Firmware not available\n");
 		return;
@@ -47,17 +49,20 @@
 
 	/* finish setting up the device */
 }
+
 static void sample_probe_specific(void)
 {
+	int retval;
 	/* Uses some specific hotplug support to get the firmware from
 	 * userspace  directly into the hardware, or via some sysfs file */
 
 	/* NOTE: This currently doesn't work */
 
-	printk(KERN_INFO "firmware_sample_driver: a ghost device got inserted :)\n");
+	printk(KERN_INFO "firmware_sample_driver: "
+		"a ghost device got inserted :)\n");
 
-        if(request_firmware(NULL, "sample_driver_fw", &ghost_device)!=0)
-	{
+	retval = request_firmware(NULL, "sample_driver_fw", &ghost_device);
+	if (retval) {
 		printk(KERN_ERR
 		       "firmware_sample_driver: Firmware load failed\n");
 		return;
@@ -70,7 +75,7 @@
 }
 static void sample_probe_async_cont(const struct firmware *fw, void *context)
 {
-	if(!fw){
+	if (!fw) {
 		printk(KERN_ERR
 		       "firmware_sample_driver: firmware load failed\n");
 		return;
@@ -80,19 +85,18 @@
 	       (char *)context);
 	sample_firmware_load(fw->data, fw->size);
 }
+
 static void sample_probe_async(void)
 {
 	/* Let's say that I can't sleep */
 	int error;
-	error = request_firmware_nowait (THIS_MODULE, FW_ACTION_NOHOTPLUG,
-					 "sample_driver_fw", &ghost_device,
-					 "my device pointer",
-					 sample_probe_async_cont);
-	if(error){
-		printk(KERN_ERR
-		       "firmware_sample_driver:"
+	error = request_firmware_nowait(THIS_MODULE, FW_ACTION_NOHOTPLUG,
+					"sample_driver_fw", &ghost_device,
+					"my device pointer",
+					sample_probe_async_cont);
+	if (error)
+		printk(KERN_ERR "firmware_sample_driver:"
 		       " request_firmware_nowait failed\n");
-	}
 }
 
 static int sample_init(void)
@@ -105,11 +109,12 @@
 	sample_probe_async();
 	return 0;
 }
+
 static void __exit sample_exit(void)
 {
 }
 
-module_init (sample_init);
-module_exit (sample_exit);
+module_init(sample_init);
+module_exit(sample_exit);
 
 MODULE_LICENSE("GPL");
diff --git a/samples/firmware_class/firmware_sample_firmware_class.c b/samples/firmware_class/firmware_sample_firmware_class.c
index 2799c47..9392116 100644
--- a/samples/firmware_class/firmware_sample_firmware_class.c
+++ b/samples/firmware_class/firmware_sample_firmware_class.c
@@ -25,30 +25,27 @@
 
 static inline struct class_device *to_class_dev(struct kobject *obj)
 {
-	return container_of(obj,struct class_device,kobj);
+	return container_of(obj, struct class_device, kobj);
 }
+
 static inline
 struct class_device_attribute *to_class_dev_attr(struct attribute *_attr)
 {
-	return container_of(_attr,struct class_device_attribute,attr);
+	return container_of(_attr, struct class_device_attribute, attr);
 }
 
-int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr);
-int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
-
 struct firmware_priv {
 	char fw_id[FIRMWARE_NAME_MAX];
 	s32 loading:2;
 	u32 abort:1;
 };
 
-extern struct class firmware_class;
-
 static ssize_t firmware_loading_show(struct class_device *class_dev, char *buf)
 {
 	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
 	return sprintf(buf, "%d\n", fw_priv->loading);
 }
+
 static ssize_t firmware_loading_store(struct class_device *class_dev,
 				      const char *buf, size_t count)
 {
@@ -57,7 +54,7 @@
 
 	fw_priv->loading = simple_strtol(buf, NULL, 10);
 
-	switch(fw_priv->loading){
+	switch (fw_priv->loading) {
 	case -1:
 		/* abort load an panic */
 		break;
@@ -65,7 +62,7 @@
 		/* setup load */
 		break;
 	case 0:
-		if(prev_loading==1){
+		if (prev_loading == 1) {
 			/* finish load and get the device back to working
 			 * state */
 		}
@@ -130,24 +127,24 @@
 	class_dev->class = &firmware_class,
 	class_set_devdata(class_dev, fw_priv);
 	retval = class_device_register(class_dev);
-	if (retval){
+	if (retval) {
 		printk(KERN_ERR "%s: class_device_register failed\n",
-		       __FUNCTION__);
+		       __func__);
 		goto error_free_fw_priv;
 	}
 
 	retval = sysfs_create_bin_file(&class_dev->kobj, &firmware_attr_data);
-	if (retval){
+	if (retval) {
 		printk(KERN_ERR "%s: sysfs_create_bin_file failed\n",
-		       __FUNCTION__);
+		       __func__);
 		goto error_unreg_class_dev;
 	}
 
 	retval = class_device_create_file(class_dev,
 					  &class_device_attr_loading);
-	if (retval){
+	if (retval) {
 		printk(KERN_ERR "%s: class_device_create_file failed\n",
-		       __FUNCTION__);
+		       __func__);
 		goto error_remove_data;
 	}
 
@@ -183,16 +180,16 @@
 
 	device_initialize(&my_device);
 	class_dev = kmalloc(sizeof(struct class_device), GFP_KERNEL);
-	if(!class_dev)
+	if (!class_dev)
 		return -ENOMEM;
 
 	error = fw_setup_class_device(class_dev, "my_firmware_image",
 				      &my_device);
-	if(error){
+	if (error) {
 		kfree(class_dev);
 		return error;
 	}
-        return 0;
+	return 0;
 
 }
 static void __exit firmware_sample_exit(void)