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From: Jerry Snitselaar <jsnitsel@redhat.com>
To: linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
	stable@vger.kernel.org, Peter Huewe <peterhuewe@gmx.de>,
	Jarkko Sakkinen <jarkko@kernel.org>,
	Jason Gunthorpe <jgg@ziepe.ca>
Subject: [PATCH] tpm/tpm_tis: Disable interrupts for more Lenovo devices
Date: Wed, 10 May 2023 17:54:03 -0700	[thread overview]
Message-ID: <20230511005403.24689-1-jsnitsel@redhat.com> (raw)

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.

Reported-by: Peter Zijlstra <peterz@infradead.org> # P360 Tiny
Closes: https://lore.kernel.org/linux-integrity/20230505130731.GO83892@hirez.programming.kicks-ass.net/
Cc: stable@vger.kernel.org # 6.2
Cc: Peter Huewe <peterhuewe@gmx.de>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
---
 drivers/char/tpm/tpm_tis.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 7af389806643..709b4e13bd6e 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -122,6 +122,22 @@ static const struct dmi_system_id tpm_tis_dmi_table[] = {
 			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"),
+		},
+	},
 	{}
 };
 
-- 
2.38.1


             reply	other threads:[~2023-05-11  0:54 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-11  0:54 Jerry Snitselaar [this message]
2023-05-18 18:28 ` [PATCH] tpm/tpm_tis: Disable interrupts for more Lenovo devices Jerry Snitselaar

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