From: Jonathan McDowell Date: Fri, 4 Aug 2023 17:08:40 +0000 (+0000) Subject: tpm/tpm_tis: Disable interrupts for Lenovo P620 devices X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=e117e7adc637e364b599dc766f1d740698e7e027;p=tomoyo%2Ftomoyo-test1.git tpm/tpm_tis: Disable interrupts for Lenovo P620 devices 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@kernel.org: truncated the commit ID in the description to 12 characters] Cc: stable@vger.kernel.org # v6.4+ Fixes: e644b2f498d2 ("tpm, tpm_tis: Enable interrupt test") Signed-off-by: Jonathan McDowell Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen --- diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index a98773ac2e55..ac4daaf294a3 100644 --- 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_tis_dmi_table[] = { }, { .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"),