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SubjectRe: [PATCH v2] drivers: pci: Directly use ida_alloc()/free()
On Thu, Jun 02, 2022 at 07:11:15AM +0000, Ke Liu wrote:
> Use ida_alloc()/ida_free() instead of deprecated
> ida_simple_get()/ida_simple_remove().
>
> Signed-off-by: Ke Liu <liuke94@huawei.com>

I split the switchtec part off and applied it with Logan's ack to
pci/ctrl/switchtec for v5.20, thanks!

PCI: switchtec: Prefer ida_alloc()/free() over ida_simple_get()/remove()

I'll apply the vmd part as soon as one of those folks pipes up.

> ---
> v2 fix sign-off name suggest by Bjorn Helgaas
> ---
> drivers/pci/controller/vmd.c | 6 +++---
> drivers/pci/switch/switchtec.c | 7 +++----
> 2 files changed, 6 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c
> index 94a14a3d7e55..49c72c2d8fe7 100644
> --- a/drivers/pci/controller/vmd.c
> +++ b/drivers/pci/controller/vmd.c
> @@ -894,7 +894,7 @@ static int vmd_probe(struct pci_dev *dev, const struct pci_device_id *id)
> return -ENOMEM;
>
> vmd->dev = dev;
> - vmd->instance = ida_simple_get(&vmd_instance_ida, 0, 0, GFP_KERNEL);
> + vmd->instance = ida_alloc(&vmd_instance_ida, GFP_KERNEL);
> if (vmd->instance < 0)
> return vmd->instance;
>
> @@ -935,7 +935,7 @@ static int vmd_probe(struct pci_dev *dev, const struct pci_device_id *id)
> return 0;
>
> out_release_instance:
> - ida_simple_remove(&vmd_instance_ida, vmd->instance);
> + ida_free(&vmd_instance_ida, vmd->instance);
> kfree(vmd->name);
> return err;
> }
> @@ -958,7 +958,7 @@ static void vmd_remove(struct pci_dev *dev)
> vmd_cleanup_srcu(vmd);
> vmd_detach_resources(vmd);
> vmd_remove_irq_domain(vmd);
> - ida_simple_remove(&vmd_instance_ida, vmd->instance);
> + ida_free(&vmd_instance_ida, vmd->instance);
> kfree(vmd->name);
> }
>
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index c36c1238c604..75be4fe22509 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -1376,8 +1376,7 @@ static struct switchtec_dev *stdev_create(struct pci_dev *pdev)
> dev->groups = switchtec_device_groups;
> dev->release = stdev_release;
>
> - minor = ida_simple_get(&switchtec_minor_ida, 0, 0,
> - GFP_KERNEL);
> + minor = ida_alloc(&switchtec_minor_ida, GFP_KERNEL);
> if (minor < 0) {
> rc = minor;
> goto err_put;
> @@ -1692,7 +1691,7 @@ static int switchtec_pci_probe(struct pci_dev *pdev,
> err_devadd:
> stdev_kill(stdev);
> err_put:
> - ida_simple_remove(&switchtec_minor_ida, MINOR(stdev->dev.devt));
> + ida_free(&switchtec_minor_ida, MINOR(stdev->dev.devt));
> put_device(&stdev->dev);
> return rc;
> }
> @@ -1704,7 +1703,7 @@ static void switchtec_pci_remove(struct pci_dev *pdev)
> pci_set_drvdata(pdev, NULL);
>
> cdev_device_del(&stdev->cdev, &stdev->dev);
> - ida_simple_remove(&switchtec_minor_ida, MINOR(stdev->dev.devt));
> + ida_free(&switchtec_minor_ida, MINOR(stdev->dev.devt));
> dev_info(&stdev->dev, "unregistered.\n");
> stdev_kill(stdev);
> put_device(&stdev->dev);
> --
> 2.25.1
>

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