Re: usbfs and MAX_USBFS_BUFFER_SIZE
Daniel Drake <[email protected]>
| Newsgroups | gmane.linux.usb.general,gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
Pete Zaitcev wrote: > On Sun, 02 Dec 2007 22:26:34 +0000, Daniel Drake <[email protected]> wrote: > >> Fair argument. I haven't actually tried sending a big urb through >> USBDEVFS_CONTROL but I noticed that MAX_USBFS_BUFFER_SIZE is not checked >> in that codepath. I wonder if something else in the chain will reject >> big control urbs. > > But you did want it for something, didn't you? Not exactly. I am writing a userspace USB I/O library (like libusb), and during testing I realised that I could not submit a bulk URB for ~110kb of data. While implementing the code to divide the request into several URBs, the thought "I wonder how this works for control URBs" crossed my mind. That's all :) I published the source of my library yesterday: http://www.reactivated.net/fprint/wiki/Fpusb Daniel - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html