This is a note to let you know that I've just added the patch titled
tpm/tpm_tis: Disable interrupts for more Lenovo devices
to the 5.15-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-more-lenovo-devices.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e7d3e5c4b1dd50a70b31524c3228c62bb41bbab2 Mon Sep 17 00:00:00 2001
From: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
Date: Wed, 10 May 2023 17:54:03 -0700
Subject: tpm/tpm_tis: Disable interrupts for more Lenovo devices
From: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
commit e7d3e5c4b1dd50a70b31524c3228c62bb41bbab2 upstream.
The P360 Tiny suffers from an irq storm issue like the T490s, so add
an entry for it to tpm_tis_dmi_table, and force polling. There also
previously was a report from the previous attempt to enable interrupts
that involved a ThinkPad L490. So an entry is added for it as well.
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> # P360 Tiny
Closes: https://lore.kernel.org/linux-integrity/20230505130731.GO83892@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
Signed-off-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/char/tpm/tpm_tis.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -83,6 +83,22 @@ static const struct dmi_system_id tpm_ti
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T490s"),
},
},
+ {
+ .callback = tpm_tis_disable_irq,
+ .ident = "ThinkStation P360 Tiny",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkStation P360 Tiny"),
+ },
+ },
+ {
+ .callback = tpm_tis_disable_irq,
+ .ident = "ThinkPad L490",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L490"),
+ },
+ },
{}
};
Patches currently in stable-queue which might be from jsnitsel@xxxxxxxxxx are
queue-5.15/tpm-tpm_tis-disable-interrupts-for-more-lenovo-devices.patch
