linux-kernel - Re: [PATCH 0/3] Increase the number of USB to serial devices we can support at once

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Date:	Thu, 06 Jun 2013 13:35:45 +0200
From:	Tobias Winter <tobias@...uxdingsda.de>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	Bjørn Mork <bjorn@...k.no>,
	Rob Landley <rob@...dley.net>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] Increase the number of USB to serial devices we can
 support at once

Hi Greg,

On 06/05/2013 07:54 PM, Greg KH wrote:
> Here are 3 patches that I've tested out on my system with only a small
> number of devices, but it seems to work, so why not let others try it
> out...

It compiles and runs without any errors. My current setup has 272 ftdi
devices connected:

rescue on 172.18.24.141:/dev$ uname -a
Linux bigrescue 3.10.0-rc3+ #1 SMP Thu Jun 6 12:21:06 CEST 2013 x86_64
GNU/Linux
rescue on 172.18.24.141:/dev$ dmesg | tail -n 15
[ 3361.898725] usb 3-1.4.4: usb_probe_device
[ 3361.898750] usb 3-1.4.4: configuration #1 chosen from 1 choice
[ 3361.901598] usb 3-1.4.4: adding 3-1.4.4:1.0 (config #1, interface 0)
[ 3361.906802] ftdi_sio 3-1.4.4:1.0: usb_probe_interface
[ 3361.906830] ftdi_sio 3-1.4.4:1.0: usb_probe_interface - got id
[ 3361.906875] ftdi_sio 3-1.4.4:1.0: FTDI USB Serial Device converter
detected
[ 3361.932490] usb 3-1.4.4: Detected FT232RL
[ 3361.952189] usb 3-1.4.4: Number of endpoints 2
[ 3361.972791] usb 3-1.4.4: Endpoint 1 MaxPacketSize 64
[ 3361.994656] usb 3-1.4.4: Endpoint 2 MaxPacketSize 64
[ 3362.016309] usb 3-1.4.4: Setting MaxPacketSize 64
[ 3362.039764] usb 3-1.4.4: FTDI USB Serial Device converter now
attached to ttyUSB271
[ 3362.075248] hub 3-1.2:1.0: state 7 ports 4 chg 0000 evt 0010
[ 3362.075676] hub 3-1.3:1.0: state 7 ports 4 chg 0000 evt 0010
[ 3362.076659] hub 3-1.4:1.0: state 7 ports 4 chg 0000 evt 0010

Sadly I only have FTDI single port interfaces and am therefore unable to
test with other devices.

Thanks for the effort!

Tobias
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