Re: USB 2.0 device has 8ms latency

2015-10-22 Thread John Tapsell
On 22 October 2015 at 18:00, Greg KH wrote: > On Thu, Oct 22, 2015 at 05:15:50PM +0100, John Tapsell wrote: >> On 15 October 2015 at 15:37, Alan Stern wrote: >> > On Thu, 15 Oct 2015, John Tapsell wrote: >> > >> >> I did have one wacky idea. I'm sure

Re: USB 2.0 device has 8ms latency

2015-10-22 Thread John Tapsell
On 15 October 2015 at 15:37, Alan Stern wrote: > On Thu, 15 Oct 2015, John Tapsell wrote: > >> I did have one wacky idea. I'm sure it's stupid, but here it is: Is >> it at all possible that there's a bug in the linux usb code where a >> bInterval value of

Re: USB 2.0 device has 8ms latency

2015-10-15 Thread John Tapsell
On 15 October 2015 at 15:37, Alan Stern wrote: > On Thu, 15 Oct 2015, John Tapsell wrote: > >> I did have one wacky idea. I'm sure it's stupid, but here it is: Is >> it at all possible that there's a bug in the linux usb code where a >> bInterval value of

Re: USB 2.0 device has 8ms latency

2015-10-15 Thread John Tapsell
On 15 October 2015 at 15:00, Greg KH wrote: > A: No. > Q: Should I include quotations after my reply? > > http://daringfireball.net/2007/07/on_top > > On Thu, Oct 15, 2015 at 02:56:48PM +0100, John Tapsell wrote: >> Hi Greg, >> >> I'm trying to write a

Re: USB 2.0 device has 8ms latency

2015-10-15 Thread John Tapsell
like to do better if it at all possible. Any suggestions? Thanks, John On 15 October 2015 at 14:46, Greg KH wrote: > On Thu, Oct 15, 2015 at 12:05:52PM +0100, John Tapsell wrote: >> Hi, >> >> I'm working on a linux driver for a usb to i2c chip (the MCP2221). >> The U

USB 2.0 device has 8ms latency

2015-10-15 Thread John Tapsell
flag; } ll_exit_clear_flag: dev->ongoing_usb_ll_op = 0; return rv; } (Please let me know what information to provide. I have oscilloscope outputs, lsusb outputs, more information about mcp2221, etc. I just didn't want to make this a huge dump of irrelevant information)