Re: query regarding usb-hotplug

From: Greg KH
Date: Wed Sep 05 2007 - 02:51:17 EST


On Mon, Sep 03, 2007 at 05:27:23PM +0530, Renuka Pampana wrote:
> hi all,
>
> iam having one doubt about the usb driver application. i written one
> small application (u can see this file usbthread.c
> in attachment

Nothing was attached :(


> , cc -o usbthread usbthread.c -lpthread -lusb (for
> compilation) ) on usb device drivers using LIBUSB-0.1.12
> in user space. my project leader has given one task about the usb
> device drivers in user space. so using lib usb library and
> written application in user space. we are getting out put as device
> properties in userspace. but we are using polling
> mechanism ( declaring one thread and calling one usb function as
> subroutine in thread, this thread calling usb function
> continuously and it has put in infinity loop). but my task have to
> develop this same application with out using poling.
>
> i heared an event mechanism for with out polling. but i dont know how
> to develop event mechanism.
>
> plz give me any idea to develop the hot plugging system by using event
> mechanism...
>
> i hope to get reply as soon as possible .

Try asking this on the libusb mailing list, the developers there should
be able to help you out.

good luck,

greg k-h
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