linux-kernel - [PATCH v3 4/4] tpm_tis: Disable Interrupts on the ThinkPad L490

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Date:   Fri,  4 Dec 2020 18:43:40 -0700
From:   Jerry Snitselaar <jsnitsel@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-integrity@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Peter Huewe <peterhuewe@....de>,
        James Bottomley <James.Bottomley@...senPartnership.com>,
        Matthew Garrett <mjg59@...gle.com>,
        Hans de Goede <hdegoede@...hat.com>
Subject: [PATCH v3 4/4] tpm_tis: Disable Interrupts on the ThinkPad L490

The interrupt storm detection code detects the issue on the ThinkPad
T490s, but the L490 still hangs at initialization. So swap out the
T490s for the L490 in the dmi check.

Cc: Jarkko Sakkinen <jarkko@...nel.org>
Cc: Jason Gunthorpe <jgg@...pe.ca>
Cc: Peter Huewe <peterhuewe@....de>
Cc: James Bottomley <James.Bottomley@...senPartnership.com>
Cc: Matthew Garrett <mjg59@...gle.com>
Cc: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Jerry Snitselaar <jsnitsel@...hat.com>
---
 drivers/char/tpm/tpm_tis.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 4ed6e660273a..7322e0986a83 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -77,10 +77,10 @@ static int tpm_tis_disable_irq(const struct dmi_system_id *d)
 static const struct dmi_system_id tpm_tis_dmi_table[] = {
 	{
 		.callback = tpm_tis_disable_irq,
-		.ident = "ThinkPad T490s",
+		.ident = "ThinkPad L490",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T490s"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L490"),
 		},
 	},
 	{}
-- 
2.27.0