eisa_eeprom: switch to fixed_size_llseek()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

drivers/parisc/eisa_eeprom.c

@@ -31,20 +31,9 @@
 
 #define 	EISA_EEPROM_MINOR 241
 
-static loff_t eisa_eeprom_llseek(struct file *file, loff_t offset, int origin )
+static loff_t eisa_eeprom_llseek(struct file *file, loff_t offset, int origin)
 {
-	switch (origin) {
-	  case 0:
-		/* nothing to do */
-		break;
-	  case 1:
-		offset += file->f_pos;
-		break;
-	  case 2:
-		offset += HPEE_MAX_LENGTH;
-		break;
-	}
-	return (offset >= 0 && offset < HPEE_MAX_LENGTH) ? (file->f_pos = offset) : -EINVAL;
+	return fixed_size_llseek(file, offset, origin, HPEE_MAX_LENGTH);
 }
 
 static ssize_t eisa_eeprom_read(struct file * file,