Date: Fri, 17 Jun 2016 19:55:18 -0700 From: bob prohaska <fbsd@www.zefox.net> To: freebsd-arm@freebsd.org Subject: pl2303 lockups on rpi2 Message-ID: <20160618025517.GA38492@www.zefox.net>
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I'm seeing lockups of two (out of four seemingly identical) P2303TA USB-serial adapters on rpi2 at r 301978. A sample console message is login: FreeBSD/arm (ns1.zefox.net) (ttyu0) login: uplcom0: at uhub1, port 4, addr 5 (disconnected) usbd_req_re_enumerate: addr=5, set address failed! (USB_ERR_IOERROR, ignored) usbd_setup_device_desc: getting device descriptor at addr 5 failed, USB_ERR_IOERROR usbd_req_re_enumerate: addr=5, set address failed! (USB_ERR_IOERROR, ignored) usbd_setup_device_desc: getting device descriptor at addr 5 failed, USB_ERR_IOERROR The device is stuck hard, even through unplug and replug. However, if it's plugged into a Mac running Prolific's drivers it's recognized and will then work for a while, sometimes days, on FreeBSD. The problem seems to move with the adapter from one RPI2 to the next, which suggests a bad adapter, but I'm wondering if it might also be a driver operating on the edge. I can find no evidence of difference between the four adapters: The chip packages look the same, all the numbers match and the soldering looks good. I've been hesitant to take a refund up to now, but unless somebody thinks there's a driver issue on the FreeBSD side perhaps I should change my tune.... Thanks for reading and any thoughts, bob prohaska
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