Re: usb: usbtmc: Questions of the IVI Foundation

2017-05-17 Thread Guido . Kiener
linux-usb-ow...@vger.kernel.org schrieb am 17.05.2017 09:08:39: > > I'm not sure for 100%, but I assume that reading the IN pipe could be > > setup asynchronously (e.g. with usb_submit_urb(..)) just before sending > > send_request_dev_dep_msg_in(..). > > USBTMC_SIZE_IOBUFFER = 2kB is a bottleneck

Re: usb: usbtmc: Questions of the IVI Foundation

2017-05-17 Thread Greg KH
On Tue, May 16, 2017 at 05:04:37PM +0200, guido.kie...@rohde-schwarz.com wrote: > > Sounds good. I think if we decide to extend the usbtmc driver then we will > hopefully find some driver developers within the companies who are > experienced :-) If you all are maintaining a Windows driver, I'm

Re: usb: usbtmc: Questions of the IVI Foundation

2017-05-17 Thread Clemens Ladisch
guido.kie...@rohde-schwarz.com wrote: > linux-usb-ow...@vger.kernel.org schrieb am 15.05.2017 15:20:22: >> Von: Greg KH >> On Mon, May 15, 2017 at 02:47:48PM +0200, Guido.Kiener@x wrote: >>> 2. As we have looked at the Linux driver, we’ve noticed that performance >>> of the usbtmc_read() f

Re: usb: usbtmc: Questions of the IVI Foundation

2017-05-16 Thread Guido . Kiener
linux-usb-ow...@vger.kernel.org schrieb am 15.05.2017 15:20:22: > Von: Greg KH > Datum: 15.05.2017 15:20 > Betreff: Re: usb: usbtmc: Questions of the IVI Foundation > Gesendet von: linux-usb-ow...@vger.kernel.org > > On Mon, May 15, 2017 at 02:47:48PM +0200, Guido.Kiener

Re: usb: usbtmc: Questions of the IVI Foundation

2017-05-15 Thread Greg KH
On Mon, May 15, 2017 at 02:47:48PM +0200, guido.kie...@rohde-schwarz.com wrote: > Hi all, > > Some members of the IVI Foundation www.ivifoundation.org have founded a > working group “VISA for Linux” that defines common rules, header files, > and shared libraries for Linux to implement the specif