usb: yurex: fixed sparse warning of incorrect type

fixed sparse warning of
1) incorrect type (different address spaces)
2) incorrect type in initializer

Signed-off-by: Sudip Mukherjee <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/misc/yurex.c

···
 	return 0;
 }
 
-static ssize_t yurex_read(struct file *file, char *buffer, size_t count, loff_t *ppos)
+static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count,
+			  loff_t *ppos)
 {
 	struct usb_yurex *dev;
 	int retval = 0;
···
 	return retval;
 }
 
-static ssize_t yurex_write(struct file *file, const char *user_buffer, size_t count, loff_t *ppos)
+static ssize_t yurex_write(struct file *file, const char __user *user_buffer,
+			   size_t count, loff_t *ppos)
 {
 	struct usb_yurex *dev;
 	int i, set = 0, retval = 0;