Platforms supporting direct message request v2 can support SPs that support multiple services. If the TPM service is sharing the SP with another service, it could get an error code of BUSY if the other service is in process. We need a way for the driver to retry sending the message to the TPM service until it succeeds or we know that no forward progress can be made. This patch adds a parameterized variable (default 2000ms) that indicates the maximum time to keep retrying for.
Prachotan Bathi (1): tpm_ffa_crb: handle tpm busy return code drivers/char/tpm/tpm_crb_ffa.c | 74 +++++++++++++++++++++++----------- 1 file changed, 50 insertions(+), 24 deletions(-) -- 2.43.0
