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| author | Jarkko Sakkinen <jarkko@kernel.org> | 2026-05-09 21:51:07 +0300 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko@kernel.org> | 2026-06-21 04:25:28 +0300 |
| commit | c0c9cfb3b75def8bf200a2d4db09015806acfeaf (patch) | |
| tree | 36b0a724cfa600b03ac6c0d6f7df8f69a31ae39d /scripts | |
| parent | 595ca21f797e43da24cb80529fb8b29381ed8716 (diff) | |
| download | linux-c0c9cfb3b75def8bf200a2d4db09015806acfeaf.tar.xz | |
tpm: tpm_tis_spi: Use wait_woken() in wait_for_tmp_stat()
wait_event_interruptible_timeout() evaluates its condition after setting
the current task state to TASK_INTERRUPTIBLE.
With CONFIG_DEBUG_ATOMIC_SLEEP this triggers a warning when the IRQ wait
path is used:
tpm_tis_status()
tpm_tis_spi_read_bytes()
tpm_tis_spi_transfer_full()
spi_bus_lock()
mutex_lock()
Address this with the following measures:
1. Call wait_tpm_stat_cond() only while tasking is running.
2. Use wait_woken() to wait for changes.
Cc: stable@vger.kernel.org # v4.19+
Cc: Linus Walleij <linusw@kernel.org>
Reported-by: Stefan Wahren <wahrenst@gmx.net>
Closes: https://lore.kernel.org/linux-integrity/6964bec7-3dbb-453b-89ef-9b990217a8b9@gmx.net/
Fixes: 1a339b658d9d ("tpm_tis_spi: Pass the SPI IRQ down to the driver")
Reviewed-by: Linus Walleij <linusw@kernel.org>
Tested-by: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions