| Message ID | 20210421221030.70647-1-ameynarkhede03@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | iommu/qcom: Cleanup resources in case of probe error path | expand |
On Thu, Apr 22, 2021 at 03:40:30AM +0530, Amey Narkhede wrote: > If device registration fails, remove sysfs attribute > and if setting bus callbacks fails, unregister the device > and cleanup the sysfs attribute. > > Signed-off-by: Amey Narkhede <ameynarkhede03@gmail.com> > --- > drivers/iommu/arm/arm-smmu/qcom_iommu.c | 14 ++++++++++++-- > 1 file changed, 12 insertions(+), 2 deletions(-) > > diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c > index 4294abe389b2..5fa128a1f7f0 100644 > --- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c > +++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c > @@ -850,10 +850,12 @@ static int qcom_iommu_device_probe(struct platform_device *pdev) > ret = iommu_device_register(&qcom_iommu->iommu, &qcom_iommu_ops, dev); > if (ret) { > dev_err(dev, "Failed to register iommu\n"); > - return ret; > + goto err_sysfs_remove; > } > > - bus_set_iommu(&platform_bus_type, &qcom_iommu_ops); > + ret = bus_set_iommu(&platform_bus_type, &qcom_iommu_ops); > + if (ret) > + goto err_unregister_device; > > if (qcom_iommu->local_base) { > pm_runtime_get_sync(dev); > @@ -862,6 +864,14 @@ static int qcom_iommu_device_probe(struct platform_device *pdev) > } > > return 0; > + > +err_unregister_device: > + iommu_device_unregister(&qcom_iommu->iommu); > + > +err_sysfs_remove: > + iommu_device_sysfs_remove(&qcom_iommu->iommu); > + > + return ret; It looks like we're also missing this logic in arm-smmu/arm-smmu.c and arm-smmu-v3/arm-smmu-v3.c. Would you be able to fix those up too, please? Will
On 21/06/08 10:29AM, Will Deacon wrote: > On Thu, Apr 22, 2021 at 03:40:30AM +0530, Amey Narkhede wrote: > > If device registration fails, remove sysfs attribute > > and if setting bus callbacks fails, unregister the device > > and cleanup the sysfs attribute. > > > > Signed-off-by: Amey Narkhede <ameynarkhede03@gmail.com> > > --- > > drivers/iommu/arm/arm-smmu/qcom_iommu.c | 14 ++++++++++++-- > > 1 file changed, 12 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c > > index 4294abe389b2..5fa128a1f7f0 100644 > > --- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c > > +++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c > > @@ -850,10 +850,12 @@ static int qcom_iommu_device_probe(struct platform_device *pdev) > > ret = iommu_device_register(&qcom_iommu->iommu, &qcom_iommu_ops, dev); > > if (ret) { > > dev_err(dev, "Failed to register iommu\n"); > > - return ret; > > + goto err_sysfs_remove; > > } > > > > - bus_set_iommu(&platform_bus_type, &qcom_iommu_ops); > > + ret = bus_set_iommu(&platform_bus_type, &qcom_iommu_ops); > > + if (ret) > > + goto err_unregister_device; > > > > if (qcom_iommu->local_base) { > > pm_runtime_get_sync(dev); > > @@ -862,6 +864,14 @@ static int qcom_iommu_device_probe(struct platform_device *pdev) > > } > > > > return 0; > > + > > +err_unregister_device: > > + iommu_device_unregister(&qcom_iommu->iommu); > > + > > +err_sysfs_remove: > > + iommu_device_sysfs_remove(&qcom_iommu->iommu); > > + > > + return ret; > > It looks like we're also missing this logic in arm-smmu/arm-smmu.c and > arm-smmu-v3/arm-smmu-v3.c. Would you be able to fix those up too, please? > > Will Sure, I will send a v2 with this and new patches. Thanks, Amey
diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c index 4294abe389b2..5fa128a1f7f0 100644 --- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c +++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c @@ -850,10 +850,12 @@ static int qcom_iommu_device_probe(struct platform_device *pdev) ret = iommu_device_register(&qcom_iommu->iommu, &qcom_iommu_ops, dev); if (ret) { dev_err(dev, "Failed to register iommu\n"); - return ret; + goto err_sysfs_remove; } - bus_set_iommu(&platform_bus_type, &qcom_iommu_ops); + ret = bus_set_iommu(&platform_bus_type, &qcom_iommu_ops); + if (ret) + goto err_unregister_device; if (qcom_iommu->local_base) { pm_runtime_get_sync(dev); @@ -862,6 +864,14 @@ static int qcom_iommu_device_probe(struct platform_device *pdev) } return 0; + +err_unregister_device: + iommu_device_unregister(&qcom_iommu->iommu); + +err_sysfs_remove: + iommu_device_sysfs_remove(&qcom_iommu->iommu); + + return ret; } static int qcom_iommu_device_remove(struct platform_device *pdev)
If device registration fails, remove sysfs attribute and if setting bus callbacks fails, unregister the device and cleanup the sysfs attribute. Signed-off-by: Amey Narkhede <ameynarkhede03@gmail.com> --- drivers/iommu/arm/arm-smmu/qcom_iommu.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) -- 2.31.1 I assume its ok to leave pm_runtime_enable in case of error.