diff --git a/drivers/char/random.c b/drivers/char/random.c
index 8e329a0f859a..84212ed5d091 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -295,7 +295,7 @@
  * To allow fractional bits to be tracked, the entropy_count field is
  * denominated in units of 1/8th bits.
  *
- * 2*(ENTROPY_SHIFT + log2(poolbits)) must <= 31, or the multiply in
+ * 2*(ENTROPY_SHIFT + poolbitshift) must <= 31, or the multiply in
  * credit_entropy_bits() needs to be 64 bits wide.
  */
 #define ENTROPY_SHIFT 3
@@ -360,8 +360,8 @@ static int random_write_wakeup_bits = 28 * OUTPUT_POOL_WORDS;
  * irreducible, which we have made here.
  */
 static const struct poolinfo {
-	int poolbitshift, poolwords, poolbytes, poolbits, poolfracbits;
-#define S(x) ilog2(x)+5, (x), (x)*4, (x)*32, (x) << (ENTROPY_SHIFT+5)
+	int poolbitshift, poolwords, poolbytes, poolfracbits;
+#define S(x) ilog2(x)+5, (x), (x)*4, (x) << (ENTROPY_SHIFT+5)
 	int tap1, tap2, tap3, tap4, tap5;
 } poolinfo_table[] = {
 	/* was: x^128 + x^103 + x^76 + x^51 +x^25 + x + 1 */