USB: ezusb: unexport some functions that aren't being used

When the ezusb code was split out, support was added for the fx2 chip
type, but no one is using these functions, so comment it out.  If
someone needs it, it can be added back in the future.

Also properly include <linux/usb/ezusb.h> into the ezusb.c file, to
ensure we catch any function prototype mis-matches
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Cc: René Bürgel <rene.buergel@sohard.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/misc/ezusb.c

@@ -15,6 +15,7 @@
 #include <linux/usb.h>
 #include <linux/firmware.h>
 #include <linux/ihex.h>
+#include <linux/usb/ezusb.h>
 
 struct ezusb_fx_type {
 	/* EZ-USB Control and Status Register.  Bit 0 controls 8051 reset */
@@ -22,21 +23,16 @@ struct ezusb_fx_type {
 	unsigned short max_internal_adress;
 };
 
-struct ezusb_fx_type ezusb_fx1 = {
+static struct ezusb_fx_type ezusb_fx1 = {
 	.cpucs_reg = 0x7F92,
 	.max_internal_adress = 0x1B3F,
 };
 
-struct ezusb_fx_type ezusb_fx2 = {
-	.cpucs_reg = 0xE600,
-	.max_internal_adress = 0x3FFF,
-};
-
 /* Commands for writing to memory */
 #define WRITE_INT_RAM 0xA0
 #define WRITE_EXT_RAM 0xA3
 
-int ezusb_writememory(struct usb_device *dev, int address,
+static int ezusb_writememory(struct usb_device *dev, int address,
 				unsigned char *data, int length, __u8 request)
 {
 	int result;
@@ -58,10 +54,9 @@ int ezusb_writememory(struct usb_device *dev, int address,
 	kfree(transfer_buffer);
 	return result;
 }
-EXPORT_SYMBOL_GPL(ezusb_writememory);
 
-int ezusb_set_reset(struct usb_device *dev, unsigned short cpucs_reg,
-			 unsigned char reset_bit)
+static int ezusb_set_reset(struct usb_device *dev, unsigned short cpucs_reg,
+			   unsigned char reset_bit)
 {
 	int response = ezusb_writememory(dev, cpucs_reg, &reset_bit, 1, WRITE_INT_RAM);
 	if (response < 0)
@@ -76,12 +71,6 @@ int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit)
 }
 EXPORT_SYMBOL_GPL(ezusb_fx1_set_reset);
 
-int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit)
-{
-	return ezusb_set_reset(dev, ezusb_fx2.cpucs_reg, reset_bit);
-}
-EXPORT_SYMBOL_GPL(ezusb_fx2_set_reset);
-
 static int ezusb_ihex_firmware_download(struct usb_device *dev,
 					struct ezusb_fx_type fx,
 					const char *firmware_path)
@@ -151,10 +140,26 @@ int ezusb_fx1_ihex_firmware_download(struct usb_device *dev,
 }
 EXPORT_SYMBOL_GPL(ezusb_fx1_ihex_firmware_download);
 
+#if 0
+/*
+ * Once someone one needs these fx2 functions, uncomment them
+ * and add them to ezusb.h and all should be good.
+ */
+static struct ezusb_fx_type ezusb_fx2 = {
+	.cpucs_reg = 0xE600,
+	.max_internal_adress = 0x3FFF,
+};
+
+int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit)
+{
+	return ezusb_set_reset(dev, ezusb_fx2.cpucs_reg, reset_bit);
+}
+EXPORT_SYMBOL_GPL(ezusb_fx2_set_reset);
+
 int ezusb_fx2_ihex_firmware_download(struct usb_device *dev,
 				     const char *firmware_path)
 {
 	return ezusb_ihex_firmware_download(dev, ezusb_fx2, firmware_path);
 }
 EXPORT_SYMBOL_GPL(ezusb_fx2_ihex_firmware_download);
-
+#endif

include/linux/usb/ezusb.h

 #ifndef __EZUSB_H
 #define __EZUSB_H
 
-
-extern int ezusb_writememory(struct usb_device *dev, int address,
-			     unsigned char *data, int length, __u8 bRequest);
-
 extern int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit);
-extern int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit);
-
 extern int ezusb_fx1_ihex_firmware_download(struct usb_device *dev,
 					    const char *firmware_path);
-extern int ezusb_fx2_ihex_firmware_download(struct usb_device *dev,
-					    const char *firmware_path);
 
 #endif /* __EZUSB_H */