Messages in this thread | | | Date | Fri, 12 Nov 2010 16:52:32 -0800 | From | Greg KH <> | Subject | Re: [PATCH 2/2] HID: roccat: using new sysfs_create_bin_group() in kone driver |
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On Fri, Nov 12, 2010 at 04:21:45PM -0800, Eric Biederman wrote: > On Fri, Nov 12, 2010 at 10:18 AM, Stefan Achatz <stefan_achatz@web.de> wrote: > > hid-roccat-kone now uses new group functions for creating binary > > sysfs attributes. > > Looking at this, I have a problem with the way this works. > You are still doing this the hard and racy way. > > sysfs attributes that are only added when we initialize the hardware and > are only removed when we remove the driver should use the device layer > functions to create their attributes. > > This achieves two things. The code is easier to write because there > is less of it. > The notification to user space happens after the attributes appear so > that you don't > have strange hotplug races. > > If there a chance you can look at implementing this in the simpler > race free way?
Good point, just attach this attribute group to the device and the driver core will automatically create the files for you.
thanks,
greg k-h
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