linux-yocto/drivers/char
Michal Suchanek 961caaf8ad tpm: tis: Double the timeout B to 4s
[ Upstream commit 2f661f71fd ]

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 de9e33df77 ("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>
2025-06-04 14:38:08 +02:00
..
agp parisc: sba: Fix compile warning wrt list of SBA devices 2023-10-06 13:18:15 +02:00
hw_random hwrng: cctrng - Add missing clk_disable_unprepare in cctrng_resume 2024-10-17 15:11:15 +02:00
ipmi ipmi: ipmb: Add check devm_kasprintf() returned value 2025-03-13 12:49:52 +01:00
mwave
pcmcia
tpm tpm: tis: Double the timeout B to 4s 2025-06-04 14:38:08 +02:00
xilinx_hwicap
xillybus char: xillybus: Check USB endpoints when probing device 2024-09-04 13:23:15 +02:00
adi.c
apm-emulation.c
applicom.c
applicom.h
bsr.c
ds1620.c
dsp56k.c
dtlk.c
hangcheck-timer.c
hpet.c hpet: Support 32-bit userspace 2024-07-18 13:07:41 +02:00
Kconfig
lp.c
Makefile
mem.c
misc.c
mspec.c
nsc_gpio.c
nvram.c
nwbutton.c
nwbutton.h
nwflash.c
pc8736x_gpio.c
powernv-op-panel.c
ppdev.c ppdev: Add an error check in register_device 2024-06-16 13:39:39 +02:00
ps3flash.c
random.c
scx200_gpio.c
sonypi.c
tb0219.c
tlclk.c
toshiba.c
ttyprintk.c
uv_mmtimer.c
virtio_console.c virtio_console: fix missing byte order handling for cols and rows 2025-05-02 07:44:30 +02:00