Re: [PATCH v5 07/28] fpga: dfl: add chardev support for feature devices

[Wu Hao]

On Thu, Jun 07, 2018 at 01:03:18PM -0500, Alan Tull wrote:
> On Wed, Jun 6, 2018 at 7:24 AM, Wu Hao <hao.wu@xxxxxxxxx> wrote:
> 
> Hi Hao,
> 
> One more...
> 
> >> > +static dev_t dfl_get_devt(enum dfl_fpga_devt_type type, int id)
> >> > +{
> >> > +       WARN_ON(type >= DFL_FPGA_DEVT_MAX);
> >> > +
> >> > +       return MKDEV(MAJOR(dfl_chrdevs[type].devt), id);
> >> > +}
> >> > +
> >> > +/**
> >> > + * dfl_fpga_register_dev_ops - register cdev ops for feature dev
> >> > + *
> >> > + * @pdev: feature dev.
> >> > + * @fops: file operations for feature dev's cdev.
> >> > + * @owner: owning module/driver.
> >> > + *
> >> > + * Return: 0 on success, negative error code otherwise.
> >> > + */
> >> > +int dfl_fpga_register_dev_ops(struct platform_device *pdev,
> >> > +                             const struct file_operations *fops,
> >> > +                             struct module *owner)
> >> > +{
> >> > +       struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
> >> > +
> >> > +       cdev_init(&pdata->cdev, fops);
> >> > +       pdata->cdev.owner = owner;
> >> > +
> >> > +       /*
> >> > +        * set parent to the feature device so that its refcount is
> >> > +        * decreased after the last refcount of cdev is gone, that
> >> > +        * makes sure the feature device is valid during device
> >> > +        * file's life-cycle.
> >> > +        */
> >> > +       pdata->cdev.kobj.parent = &pdev->dev.kobj;
> >> > +
> >> > +       return cdev_add(&pdata->cdev, pdev->dev.devt, 1);
> >> > +}
> >> > +EXPORT_SYMBOL_GPL(dfl_fpga_register_dev_ops);
> >> > +
> >> > +/**
> >> > + * dfl_fpga_unregister_dev_ops - unregister cdev ops for feature dev
> >> > + * @pdev: feature dev.
> >> > + */
> >> > +void dfl_fpga_unregister_dev_ops(struct platform_device *pdev)
> >> > +{
> >> > +       struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
> >> > +
> >> > +       cdev_del(&pdata->cdev);
> >> > +}
> >> > +EXPORT_SYMBOL_GPL(dfl_fpga_unregister_dev_ops);
> 
> How about dfl_fpga_dev_ops_register/unregister?

Sure, will fix this in the v6. Thanks.

Hao

> 
> Thanks,
> Alan
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