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| author | Jarkko Sakkinen <jarkko@kernel.org> | 2023-04-26 20:29:28 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-30 14:03:16 +0100 |
| commit | 7cd46930b8bf37b84777410ac21bfdf1179021d5 (patch) | |
| tree | c453feb0fe67e32e194e6291d6f029751df5a2c8 /drivers/watchdog | |
| parent | 25d38d5eaa1f7a4d8075d23633f1722b38c8c7a7 (diff) | |
| download | linux-7cd46930b8bf37b84777410ac21bfdf1179021d5.tar.gz linux-7cd46930b8bf37b84777410ac21bfdf1179021d5.tar.bz2 linux-7cd46930b8bf37b84777410ac21bfdf1179021d5.zip | |
tpm: Prevent hwrng from activating during resume
[ Upstream commit 99d46450625590d410f86fe4660a5eff7d3b8343 ]
Set TPM_CHIP_FLAG_SUSPENDED in tpm_pm_suspend() and reset in
tpm_pm_resume(). While the flag is set, tpm_hwrng() gives back zero
bytes. This prevents hwrng from racing during resume.
Cc: stable@vger.kernel.org
Fixes: 6e592a065d51 ("tpm: Move Linux RNG connection to hwrng")
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/watchdog')
0 files changed, 0 insertions, 0 deletions