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From: Kuldeep Singh <quic_kuldsing@quicinc.com>
To: Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio
<konradybcio@kernel.org>,
Bartosz Golaszewski
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CC: <linux-arm-msm@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v2 0/2] qcom_tzmem: Enhance Error Handling for shmbridge
Date: Mon, 14 Oct 2024 16:45:25 +0530
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qcom_tzmem: Enhance Error Handling for shmbridge
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expand
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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@quicinc.com/ 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(-)