On Wed, 22 May 2013, Joe Julian wrote: > On 05/21/2013 03:20 PM, Joe Julian wrote: > > I have about 100 of these creditcard/check scanners that are dropping > > events. I was able to find some overflows that I assume are probably > > related to the problem, "usb 4-1: ctrl urb status -75 received". > > > > Short of asking the vendor to fix their product or compiling a custom > > kernel, are there any other options? Can the MaxPacketSize or the > > buffer size be overridden somehow (/sys/bus/usb/devices... maybe)? > I have started a dialog with UIC (Uniform Industrial Corp) about a fix, > but I'm not very hopeful. Is there anything I can do to work around the > overflow? Without knowing more (like where the overflows occur and what data was expected), it is impossible to answer this question. A usbmon trace would help. Simply changing the bMaxPacketSize0 value is extremely unlikely to work. Alan Stern -- 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
