Messages in this thread | | | Date | Wed, 20 Sep 2006 14:57:53 -0700 | From | Greg KH <> | Subject | Re: USB: u132-hcd: host controller driver for ELAN U132 adapter |
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On Wed, Sep 13, 2006 at 11:27:35AM +0100, Tony Olech wrote: > This "u132-hcd" module is one half of the "driver" for > ELAN's U132 which is a USB to CardBus OHCI controller > adapter. This module needs the "ftdi-elan" module in > order to communicate to CardBus OHCI controller inserted > into the U132 adapter. > > When the "ftdi-elan" module detects a supported CardBus > OHCI controller in the U132 adapter it loads this "u132-hcd" > module. > > Upon a successful device probe() the single workqueue > is started up which does all the processing of commands > from the USB core that implement the host controller. > > The workqueue maintains the urb queues and issues commands > via the functions exported by the "ftdi-elan" module. Each > such command will result in a callback. > > Note that the "ftdi-elan" module is a USB client driver. > > Note that this "u132-hcd" module is a (cut-down OHCI) > host controller. > > Thus we have a topology with the parent of a host controller > being a USB client! This really stresses the USB subsystem > semaphore/mutex handling in the module removal. > > Signed-off-by: Tony Olech <tony.olech@elandigitalsystems.com>
I've applied this, and fixed up the build issue (needed to add it also to the drivers/usb/Makefile file) and the sparse errors, but I'm still getting these warnings:
drivers/usb/host/ohci.h:605: warning: 'periodic_reinit' defined but not used drivers/usb/host/ohci.h:629: warning: 'roothub_a' defined but not used drivers/usb/host/ohci.h:635: warning: 'roothub_portstatus' defined but not used
Care to send me a follow-on patch that fixes this?
thanks,
greg k-h - 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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