| Message ID | 1719910870-25079-1-git-send-email-quic_zhenhuah@quicinc.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | iommu/arm-smmu-qcom: record reason for deferring probe | expand |
On Tue, Jul 02, 2024 at 05:01:10PM GMT, Zhenhua Huang wrote: > 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: Zhenhua Huang <quic_zhenhuah@quicinc.com> > --- > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
On Tue, 02 Jul 2024 17:01:10 +0800, Zhenhua Huang wrote: > 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 > > Applied to will (for-joerg/arm-smmu/updates), thanks! [1/1] iommu/arm-smmu-qcom: record reason for deferring probe https://git.kernel.org/will/c/9796cf9b3eb9 Cheers,
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index 25f034677f56..971c6a2e592b 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -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)
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: Zhenhua Huang <quic_zhenhuah@quicinc.com> --- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)