| commit | 99d46450625590d410f86fe4660a5eff7d3b8343 | [log] [tgz] |
|---|---|---|
| author | Jarkko Sakkinen <jarkko@kernel.org> | Wed Apr 26 20:29:28 2023 +0300 |
| committer | Jarkko Sakkinen <jarkko@kernel.org> | Tue May 16 02:43:12 2023 +0300 |
| tree | 446c3d6a59c7a4a8762954ee3e527ff0b257d686 | |
| parent | 1398aa803f198b7a386fdd8404666043e95f4c16 [diff] |
tpm: Prevent hwrng from activating during resume
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>