On 23/01/2025 12:18, Johan Hovold wrote: > [Some people who received this message don't often get email from johan@xxxxxxxxxx. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] > > This email is not from Hexagon’s Office 365 instance. Please be careful while clicking links, opening attachments, or replying to this email. > > > On Wed, Jan 22, 2025 at 05:17:36PM +0000, POPESCU Catalin wrote: >> On 22/01/2025 14:53, Greg KH wrote: >>> serdev can not use usb-serial devices due to the lack of hotplugging, so >>> why is this an issue? I thought that just would not work. >> Well, I can say that on 6.12.0 it's working : >> >> [ 0.929493] usb 1-1: new full-speed USB device number 2 using xhci-hcd >> [ 5.906574] usbcore: registered new interface driver ftdi_sio >> [ 5.906632] usbserial: USB Serial support registered for FTDI USB >> Serial Device >> [ 5.906727] ftdi_sio 1-1:1.0: FTDI USB Serial Device converter detected >> [ 5.906842] usb 1-1: Detected FT-X >> [ 5.907809] serial serial0: tty port ttyUSB0 registered > You'd need to patch USB serial too for this to happen so this in not > mainline 6.12. > > And if the port is open during disconnect you'd see a bunch of warnings > because the serdev tty port implementation does not handle hangups. > > Johan My bad, I got a reminder that we're using a set of patches that add support for the missing pieces : https://lore.kernel.org/all/20240807-v6-10-topic-usb-serial-serdev-v1-0-ed2cc5da591f@xxxxxxxxxxxxxx/ Sorry for the confusion. BR, Catalin
