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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 11 May 2023 14:03:06 +0000 (23:03 +0900)
commit10eea3cfda293aa5280077203eaf52c34f922a94
treea1387128885c905531a4e5064a214f3624f586f6
parent12839c326ae5cd4d43b337274465bd0ec8634365
tpm, tpm_tis: Claim locality before writing TPM_INT_ENABLE register

[ 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>
drivers/char/tpm/tpm_tis_core.c