Messages in this thread | | | From | Bill Davidsen <> | Subject | Re: Load hid.o module synchronously? | Date | Wed, 28 Apr 2004 10:02:15 -0400 |
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Patrick J. LoPresti wrote: > Chris Friesen <cfriesen@nortelnetworks.com> writes: > > >>Patrick J. LoPresti wrote: >> >> >>>For example, I invoke "modprobe hid" to make my USB keyboard work. >>>This loads the module and exits immediately, causing my script to >>>proceed, before the USB keyboard is probed and ready. >>>I want to wait until the driver is finished initializing (i.e., a USB >>>keyboard is either found or not found) before my script continues. >>>How can I do that? >> >>How about scanning the usb device tree to see if the keyboard is >>present and properly detected? > > > You mean under sysfs or usbfs? Or both? > > I see how I can scan for a USB keyboard after loading the USB host > controller module. I think. But what do I look for, exactly, to tell > when hid.o has hooked itself up to the keyboard?
You need to be able to tell "not hooked yet" from "never saw it" for reliable operation. I don't know how to do that, sorry.
-- -bill davidsen (davidsen@tmr.com) "The secret to procrastination is to put things off until the last possible moment - but no longer" -me - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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