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7ea1913daa
[ Upstream commit 2f661f71fda1fc0c42b7746ca5b7da529eb6b5be ]
With some Infineon chips the timeouts in tpm_tis_send_data (both B and
C) can reach up to about 2250 ms.
Timeout C is retried since
commit de9e33df7762 ("tpm, tpm_tis: Workaround failed command reception on Infineon devices")
Timeout B still needs to be extended.
The problem is most commonly encountered with context related operation
such as load context/save context. These are issued directly by the
kernel, and there is no retry logic for them.
When a filesystem is set up to use the TPM for unlocking the boot fails,
and restarting the userspace service is ineffective. This is likely
because ignoring a load context/save context result puts the real TPM
state and the TPM state expected by the kernel out of sync.
Chips known to be affected:
tpm_tis IFX1522:00: 2.0 TPM (device-id 0x1D, rev-id 54)
Description: SLB9672
Firmware Revision: 15.22
tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1B, rev-id 22)
Firmware Revision: 7.83
tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1A, rev-id 16)
Firmware Revision: 5.63
Link: https://lore.kernel.org/linux-integrity/Z5pI07m0Muapyu9w@kitsune.suse.cz/
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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| .. | ||
| eventlog | ||
| st33zp24 | ||
| Kconfig | ||
| Makefile | ||
| tpm_atmel.c | ||
| tpm_atmel.h | ||
| tpm_crb.c | ||
| tpm_ftpm_tee.c | ||
| tpm_ftpm_tee.h | ||
| tpm_i2c_atmel.c | ||
| tpm_i2c_infineon.c | ||
| tpm_i2c_nuvoton.c | ||
| tpm_ibmvtpm.c | ||
| tpm_ibmvtpm.h | ||
| tpm_infineon.c | ||
| tpm_nsc.c | ||
| tpm_ppi.c | ||
| tpm_tis_core.c | ||
| tpm_tis_core.h | ||
| tpm_tis_i2c_cr50.c | ||
| tpm_tis_i2c.c | ||
| tpm_tis_spi_cr50.c | ||
| tpm_tis_spi_main.c | ||
| tpm_tis_spi.h | ||
| tpm_tis_synquacer.c | ||
| tpm_tis.c | ||
| tpm_vtpm_proxy.c | ||
| tpm-chip.c | ||
| tpm-dev-common.c | ||
| tpm-dev.c | ||
| tpm-dev.h | ||
| tpm-interface.c | ||
| tpm-sysfs.c | ||
| tpm.h | ||
| tpm1-cmd.c | ||
| tpm2-cmd.c | ||
| tpm2-space.c | ||
| tpmrm-dev.c | ||
| xen-tpmfront.c | ||