Commit 9796cf9b authored by Zhenhua Huang's avatar Zhenhua Huang Committed by Will Deacon
Browse files

iommu/arm-smmu-qcom: record reason for deferring probe 



To avoid deferring probe smmu driver silently, record reason for it.
It can be checked through ../debugfs/devices_deferred as well:
/sys/kernel/debug# cat devices_deferred
15000000.iommu  arm-smmu: qcom_scm not ready

Signed-off-by: default avatarZhenhua Huang <quic_zhenhuah@quicinc.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/1719910870-25079-1-git-send-email-quic_zhenhuah@quicinc.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent d525b0af

drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c

+2 −1
Original line number Diff line number Diff line
@@ -469,7 +469,8 @@ static struct arm_smmu_device *qcom_smmu_create(struct arm_smmu_device *smmu, 


	/* Check to make sure qcom_scm has finished probing */

	if (!qcom_scm_is_available())

		return ERR_PTR(-EPROBE_DEFER);

		return ERR_PTR(dev_err_probe(smmu->dev, -EPROBE_DEFER,

			"qcom_scm not ready\n"));



	qsmmu = devm_krealloc(smmu->dev, smmu, sizeof(*qsmmu), GFP_KERNEL);

	if (!qsmmu)