Commit 60b9a9c8 authored May 10, 2023 by Jerry Snitselaar Committed by Greg Kroah-Hartman May 30, 2023

tpm/tpm_tis: Disable interrupts for more Lenovo devices

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@vger.kernel.org
Reported-by: Peter Zijlstra <peterz@infradead.org> # P360 Tiny
Closes: https://lore.kernel.org/linux-integrity/20230505130731.GO83892@hirez.programming.kicks-ass.net/

Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent a33c172c

drivers/char/tpm/tpm_tis.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -83,6 +83,22 @@ 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"),
		},
		},
		{}
		};