[PATCH v2 5/6] tpm: PCR allocate during PCR extend to disable the unsupported algorithms

During PCR extend process, if any unsupported algorithms are active, try to use PCR allocate to inactivate them.

Signed-off-by: Raymond Mao raymond.mao@linaro.org --- changes in v2 - None.

lib/tpm-v2.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/tpm-v2.c b/lib/tpm-v2.c index 0e497b2c2a..4995ddc9af 100644 --- a/lib/tpm-v2.c +++ b/lib/tpm-v2.c @@ -344,7 +344,10 @@ u32 tpm2_pcr_extend(struct udevice *dev, u32 index, u32 algorithm,

if (!tpm2_check_active_banks(dev)) { log_err("Cannot extend PCRs if all the TPM enabled algorithms are not supported\n"); - return -EINVAL; + + ret = tpm2_pcr_allocate(dev, 0); + if (ret) + return -EINVAL; } /* * Fill the command structure starting from the first buffer: