This is a note to let you know that I've just added the patch titled drivers/char/random.c: remove unused stuct poolinfo::poolbits to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drivers-char-random.c-remove-unused-stuct-poolinfo-poolbits.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Fri Jun 17 08:58:56 AM CEST 2022 From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx> Date: Fri, 2 Nov 2018 12:04:46 +0100 Subject: drivers/char/random.c: remove unused stuct poolinfo::poolbits From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx> commit 3bd0b5bf7dc3ea02070fcbcd682ecf628269e8ef upstream. This field is never used, might as well remove it. Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx> Signed-off-by: Theodore Ts'o <tytso@xxxxxxx> Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/char/random.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- 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 * 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 */ Patches currently in stable-queue which might be from linux@xxxxxxxxxxxxxxxxxx are queue-4.19/drivers-char-random.c-make-primary_crng-static.patch queue-4.19/drivers-char-random.c-remove-unused-stuct-poolinfo-poolbits.patch queue-4.19/drivers-char-random.c-constify-poolinfo_table.patch