*   Upload firmware code to SigmaTel 421X IRDA-USB dongle
  */
 static int stir421x_fw_upload(struct irda_usb_cb *self,
-                            unsigned char *patch,
+                            const unsigned char *patch,
                             const unsigned int patch_len)
 {
         int ret = -ENOMEM;
   */
 static int stir421x_patch_device(struct irda_usb_cb *self)
 {
-        unsigned int i;
-        int ret;
-        char stir421x_fw_name[11];
-        const struct firmware *fw;
-        unsigned char *fw_version_ptr; /* pointer to version string */
+       unsigned int i;
+       int ret;
+       char stir421x_fw_name[11];
+       const struct firmware *fw;
+       const unsigned char *fw_version_ptr; /* pointer to version string */
        unsigned long fw_version = 0;
 
         /*