Messages in this thread | | | From | Logan Gunthorpe <> | Date | Fri, 10 Feb 2017 12:22:48 -0700 | Subject | Re: [PATCH] device-dax: don't set kobj parent during cdev init |
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Hey,
Also on the subject of very minor fixes: I noticed drivers/dax is not in the maintainers file. I just assumed the nvdimm list should have been included with those from get_maintainers.
Thanks,
Logan
On 10/02/17 12:19 PM, Logan Gunthorpe wrote: > I copied this code and per feedback from Greg Kroah-Hartman [1] the > cdev's kobject's parent should not be set to the related device. > This should have minor consequences but isn't doing what anyone > expects it to. > > This patch then fixes device-dax so it doesn't make the same mistake. > > [1] https://lkml.org/lkml/2017/2/10/370 > > Signed-off-by: Logan Gunthorpe <logang@deltatee.com> > --- > drivers/dax/dax.c | 6 +----- > 1 file changed, 1 insertion(+), 5 deletions(-) > > diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c > index ed758b7..24e53b7 100644 > --- a/drivers/dax/dax.c > +++ b/drivers/dax/dax.c > @@ -699,13 +699,9 @@ struct dax_dev *devm_create_dax_dev(struct dax_region *dax_region, > goto err_inode; > } > > - /* device_initialize() so cdev can reference kobj parent */ > - device_initialize(dev); > - > cdev = &dax_dev->cdev; > cdev_init(cdev, &dax_fops); > cdev->owner = parent->driver->owner; > - cdev->kobj.parent = &dev->kobj; > rc = cdev_add(&dax_dev->cdev, dev_t, 1); > if (rc) > goto err_cdev; > @@ -722,7 +718,7 @@ struct dax_dev *devm_create_dax_dev(struct dax_region *dax_region, > dev->groups = dax_attribute_groups; > dev->release = dax_dev_release; > dev_set_name(dev, "dax%d.%d", dax_region->id, dax_dev->id); > - rc = device_add(dev); > + rc = device_register(dev); > if (rc) { > put_device(dev); > return ERR_PTR(rc); >
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