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    SubjectRE: [PATCH v2] staging: comedi: refactor sysfs files in comedi_fops.c
    On Wednesday, May 09, 2012 1:39 PM, Greg KH wrote:
    > On Wed, May 09, 2012 at 09:20:08AM -0700, H Hartley Sweeten wrote:
    >> Refactor the sysfs attributes and functions to remove
    >> the need for the forward declarations and use the
    >> DEVICE_ATTR macro to define them.
    >> Instead of individually creating sysfs device attribute
    >> files, wrap them in an attribute_group and use the
    >> sysfs_create_group function to create them.
    > This is great, and needed to be done, but you need to take this one step
    > further. This attribute group needs to be registered by the driver
    > core, not the comedi core, so userspace doesn't get an add event before
    > the files are created. To do that, assign this attribute group to the
    > class and the core will handle it for you.
    > I've taken this patch, but will you make a follow-on patch that makes
    > this change, which will remove this race? It should be a net removal of
    > code in the comedi core overall.
    I think I worked this out. Compile testing it now and will post the patch


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