This is a note to let you know that I've just added the patch titled
tpm/tpm_tis: Disable interrupts for Lenovo P620 devices
to the 6.4-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:
tpm-tpm_tis-disable-interrupts-for-lenovo-p620-devices.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e117e7adc637e364b599dc766f1d740698e7e027 Mon Sep 17 00:00:00 2001
From: Jonathan McDowell <noodles@xxxxxxxx>
Date: Fri, 4 Aug 2023 17:08:40 +0000
Subject: tpm/tpm_tis: Disable interrupts for Lenovo P620 devices
From: Jonathan McDowell <noodles@xxxxxxxx>
commit e117e7adc637e364b599dc766f1d740698e7e027 upstream.
The Lenovo ThinkStation P620 suffers from an irq storm issue like various
other Lenovo machines, so add an entry for it to tpm_tis_dmi_table and
force polling.
It is worth noting that 481c2d14627d (tpm,tpm_tis: Disable interrupts after
1000 unhandled IRQs) does not seem to fix the problem on this machine, but
setting 'tpm_tis.interrupts=0' on the kernel command line does.
[jarkko@xxxxxxxxxx: truncated the commit ID in the description to 12
characters]
Cc: stable@xxxxxxxxxxxxxxx # v6.4+
Fixes: e644b2f498d2 ("tpm, tpm_tis: Enable interrupt test")
Signed-off-by: Jonathan McDowell <noodles@xxxxxxxx>
Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/char/tpm/tpm_tis.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -164,6 +164,14 @@ static const struct dmi_system_id tpm_ti
},
{
.callback = tpm_tis_disable_irq,
+ .ident = "ThinkStation P620",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkStation P620"),
+ },
+ },
+ {
+ .callback = tpm_tis_disable_irq,
.ident = "TUXEDO InfinityBook S 15/17 Gen7",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
Patches currently in stable-queue which might be from noodles@xxxxxxxx are
queue-6.4/tpm-tpm_tis-disable-interrupts-for-lenovo-p620-devices.patch
