Re: Misbehaving device

2013-05-30 Thread Alan Stern
On Wed, 29 May 2013, Joe Julian wrote: > On 05/22/2013 12:27 PM, Alan Stern wrote: > > 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 overflo

Re: Misbehaving device

2013-05-29 Thread Joe Julian
On 05/22/2013 12:27 PM, Alan Stern wrote: 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

Re: Misbehaving device

2013-05-23 Thread Alan Stern
On Wed, 22 May 2013, Joe Julian wrote: > Right, and I'm supposed to know that how? You're the one who's an > expert on usb. You know how HID keyboards pass data. I'm starting > from scratch and only have data that is sensitive. It's hard to know > what you can share when you don't know what you ha

Re: Misbehaving device

2013-05-22 Thread Joe Julian
Right, and I'm supposed to know that how? You're the one who's an expert on usb. You know how HID keyboards pass data. I'm starting from scratch and only have data that is sensitive. It's hard to know what you can share when you don't know what you have. Since you have expectations that I'm no

Re: Misbehaving device

2013-05-22 Thread Alan Stern
On Wed, 22 May 2013, Joe Julian wrote: > Thanks. I have a usbmon capture of a failed event, but since this is a > credit card scan I need to at least interpret and obfuscate the card > data. For a keystroke there seems to be two events each, the key press > (3800) and the key release (0

Re: Misbehaving device

2013-05-22 Thread Joe Julian
On 05/22/2013 12:27 PM, Alan Stern wrote: 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

Re: Misbehaving device

2013-05-22 Thread Alan Stern
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

Re: Misbehaving device

2013-05-22 Thread Joe Julian
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

Misbehaving device

2013-05-21 Thread Joe Julian
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 an