Re: A question about interrupt of USB device driver

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On Wed, Aug 15, 2007 at 10:12:23AM +0800, peter meng wrote:
> Hi,All
> I'm a beginner of USB .
> I have a question about USB device driver on Linux  .
> I know all device driver need use request_irq to
> register interrupt handler .
> For example  I could not find  the driver  which use
> it  under drivers/usb/net/ directory .
> How the usb device driver process the interrupt ?
> Anybody can explain this ?

USB drivers do not get interrupts like PCI devices do, they submit urbs
and get called back when they are completed.

Try reading the chapter on USB drivers in the book, "Linux Device
Drivers, third edition", free online, to learn more about the USB driver
model.  If you have further questions, please ask them on the
linux-usb-devel mailing list.

good luck,

greg k-h

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