On Tue, Feb 10, 2009 at 2:54 AM, Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> wrote: > On Mon, Feb 09, 2009 at 07:56:02AM -0800, Greg KH wrote: >> On Mon, Feb 09, 2009 at 12:47:27PM +0530, Madhukar G wrote: >> > > Are you sure that really is doing what you think it is doing? >> > > (hint, it isn't...) >> > > >> > > Try using the correct flag here and it will work much better... >> > > >> > >> > I tried using IGNORE_DEVICE but i got compilation errors (undeclared >> > expression). Currently I'm using kernel version 2.6.14. Is this flag >> > not available in this version. >> >> Wow, that kernel is many years old, why are you using such an obsolete >> kernel for new development? I would encourage you to use a more modern >> kernel release. >> >> > Can you let me know the correct flag that i can use? >> >> IGNORE_DEVICE is the correct one. >> >> > > I still don't understand why you are writing a separate usb-storage >> > > driver for your device. Please explain this. >> > > >> > >> > My aim is to modify a mass storage class driver with USB attached SCSI >> > protocol stack (available in www.t10.org). At the same time i wanted >> > to have a separate driver for generic mass storage class devices. > > People who aren't on the T10 committee can't access that spec. If > you're a member of usb.org, you can access the USB class specification > they're working on for UASP USB 2.0 and USB 3.0 devices: > > https://www.usb.org/apps/org/workgroup/uasp/ > >> They should be the same driver, why split them apart? >> >> > The only difference between generic mass storage device and UASP >> > device is that, UASP device provides an additional interface >> > descriptor and share the same device class (USB_CLASS_MASS_STORAGE). >> >> That should not be enough to have to create a whole new driver, right? > > That's not the only difference that the UASP driver will need to handle. > See http://marc.info/?l=linux-usb&m=123313308402780&w=2 for more info on > what it will need to support. I don't think this will require a whole > new MSD driver though. The UASP support should just be integrated into > the current MSD driver. The members of www.t10.org and www.usb.org can get the UASP modifications you are making to MSD driver? If yes, can you provide the link? Thanks, Ramya -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
