On Fri, 5 Jul 2019, Greg Kroah-Hartman wrote:

On Fri, Jul 05, 2019 at 09:04:17AM +0100, David Howells wrote:

quoted

Greg Kroah-Hartman [off-list ref] wrote:

quoted

Hm, good point, but there should be some way to test this to verify it
works.  Maybe for the other types of events?

Keyrings is the simplest.  keyutils's testsuite will handle that.  I'm trying
to work out if I can simply make every macro in there that does a modification
perform a watch automatically to make sure the appropriate events happen.

That should be good enough to test the basic functionality.  After this
gets merged I'll see if I can come up with a way to test the USB
stuff...

You can create USB connect and disconnect events programmatically by
using dummy-hcd with gadget-zero.  Turning off the port's POWER feature
will cause a disconnect, and turning it back on will cause a connect.

Alan Stern