]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
tpm, tpm_tis: Claim locality before writing TPM_INT_ENABLE register
authorLino Sanfilippo <l.sanfilippo@kunbus.com>
Thu, 24 Nov 2022 13:55:26 +0000 (14:55 +0100)
committerStefan Bader <stefan.bader@canonical.com>
Fri, 7 Jul 2023 10:16:46 +0000 (12:16 +0200)
commit70e4c3a430d92cc8d5fb9eb730631cc278ada48a
treed84691cbebe70a67598f8a6b984c24399a19912b
parent2b83b2f4760d58925741b2502baa59b803858fc4
tpm, tpm_tis: Claim locality before writing TPM_INT_ENABLE register

BugLink: https://bugs.launchpad.net/bugs/2025067
[ Upstream commit 282657a8bd7fddcf511b834f43705001668b33a7 ]

In disable_interrupts() the TPM_GLOBAL_INT_ENABLE bit is unset in the
TPM_INT_ENABLE register to shut the interrupts off. However modifying the
register is only possible with a held locality. So claim the locality
before disable_interrupts() is called.

Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
Tested-by: Michael Niewöhner <linux@mniewoehner.de>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Stable-dep-of: 955df4f87760 ("tpm, tpm_tis: Claim locality when interrupts are reenabled on resume")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
drivers/char/tpm/tpm_tis_core.c