Pierre Ossman wrote:
Kay Sievers wrote:
We could change the driver-core to suppress the creation of an attribute
if the attribute's show() or store() method returns something like
-ENOENT at registration time?
The driver would pass _all_ possible attributes of the device at
registration time, but the core would only create the attributes which
are implemented for this particular device? Would that work for you?
Not sure. Not in an obvious way at least.
It also doesn't feel like "the kernel way". Generally you can
create/allocate an object, assign attributes to it, then activate it.
Couldn't it be done so that I can add sysfs stuff to a device after I
just initialized it? (but before I add it).
You can assign any number of attribute groups to the device. If they
don't have a group name, they will all be created directly at the device
level. Would that work for you?
I've had a look at sysfs groups and the biggest beef I have with those
is that they're too low level. In order to use them I first need to
create device attributes, then create an array of pointers to each attr
member. It would be nice if I could just feed an array of device
attributes (i.e. I want wrappers).
And how does this help to avoid the race condition?
Just curious.
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