Mario Limonciello d8a7d6136c tpm: Disable RNG for all AMD fTPMs ... commit 554b841d47 upstream. The TPM RNG functionality is not necessary for entropy when the CPU already supports the RDRAND instruction. The TPM RNG functionality was previously disabled on a subset of AMD fTPM series, but reports continue to show problems on some systems causing stutter root caused to TPM RNG functionality. Expand disabling TPM RNG use for all AMD fTPMs whether they have versions that claim to have fixed or not. To accomplish this, move the detection into part of the TPM CRB registration and add a flag indicating that the TPM should opt-out of registration to hwrng. Cc: stable@vger.kernel.org # 6.1.y+ Fixes: b006c439d5 ("hwrng: core - start hwrng kthread also for untrusted sources") Fixes: f1324bbc40 ("tpm: disable hwrng for fTPM on some AMD designs") Reported-by: daniil.stas@posteo.net Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217719 Reported-by: bitlord0xff@gmail.com Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217212 Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-08-16 18:27:20 +02:00
..
acpi	…
asm-generic	word-at-a-time: use the same return type for has_zero regardless of endianness	2023-08-11 12:08:11 +02:00
clocksource	…
crypto	…
drm	drm/dp_mst: Clear MSG_RDY flag before sending new message	2023-07-27 08:50:52 +02:00
dt-bindings	…
keys	…
kunit	…
kvm	…
linux	tpm: Disable RNG for all AMD fTPMs	2023-08-16 18:27:20 +02:00
math-emu	…
media	…
memory	…
misc	…
net	vxlan: Fix nexthop hash size	2023-08-11 12:08:17 +02:00
pcmcia	…
ras	…
rdma	…
rv	…
scsi	…
soc	net: mscc: ocelot: don't keep PTP configuration of all ports in single structure	2023-07-19 16:22:01 +02:00
sound	…
target	…
trace	net: fix net_dev_start_xmit trace event vs skb_transport_offset()	2023-07-19 16:22:05 +02:00
uapi	block: Fix a source code comment in include/uapi/linux/blkzoned.h	2023-08-03 10:24:04 +02:00
ufs	…
vdso	…
video	…
xen	…