This patchset addresses the tzmem driver probe failure caused by incorrect error handling. The qcom_scm_shm_bridge_enable() SCM call captures SCM success/failure in a0 and E_NOT_SUPPORTED in a1. Previously, qcom_scm returned values based solely on a0, without capturing not_supported scenario. This patchset corrects that behavior. Along with this, add sanity checks on input parameters passed to exposed APIs as it is missing currently. Changes in v2: - Restructure qcom_scm_shm_bridge_enable scm return value - Update commit message - Keep relevant sanity in qcom_tzmem v1: Link: https://lore.kernel.org/linux-arm-msm/20241005140150.4109700-1-quic_kuldsing@xxxxxxxxxxx/ Kuldeep Singh (1): firmware: qcom: qcom_tzmem: Implement sanity checks Qingqing Zhou (1): firmware: qcom: scm: Return -EOPNOTSUPP for unsupported SHM bridge enabling drivers/firmware/qcom/qcom_scm.c | 13 ++++++++++++- drivers/firmware/qcom/qcom_tzmem.c | 6 ++++++ 2 files changed, 18 insertions(+), 1 deletion(-) -- 2.34.1
