Merge: crypto: jitter - consider 32 LSB for APT

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/2019

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2164067
Upstream Status: merged into the linux.git

A system with AMD EPYC Rome CPU fails to boot RHEL9 in FIPS mode
due to missing upstream 552d03a ("crypto: jitter - consider
32 LSB for APT"). This upstream patch applies cleanly.

Signed-off-by: Vladis Dronov <vdronov@redhat.com>

Approved-by: Clemens Lang <cllang@redhat.com>
Approved-by: Herbert Xu <zxu@redhat.com>

Signed-off-by: Herton R. Krzesinski <herton@redhat.com>

Author: Herton R. Krzesinski

crypto/jitterentropy.c

@@ -281,7 +281,6 @@ static int jent_stuck(struct rand_data *ec, __u64 current_delta)
 {
 	__u64 delta2 = jent_delta(ec->last_delta, current_delta);
 	__u64 delta3 = jent_delta(ec->last_delta2, delta2);
-	unsigned int delta_masked = current_delta & JENT_APT_WORD_MASK;
 
 	ec->last_delta = current_delta;
 	ec->last_delta2 = delta2;
@@ -290,7 +289,7 @@ static int jent_stuck(struct rand_data *ec, __u64 current_delta)
 	 * Insert the result of the comparison of two back-to-back time
 	 * deltas.
 	 */
-	jent_apt_insert(ec, delta_masked);
+	jent_apt_insert(ec, current_delta);
 
 	if (!current_delta || !delta2 || !delta3) {
 		/* RCT with a stuck bit */