Date: Thu, 25 Jun 2020 20:20:09 +0200 From: Jan Behrens <jbe-mlist@magnetkern.de> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-usb@freebsd.org Subject: Re: USB reset fails when using a LimeSDR Mini on FreeBSD Message-ID: <20200625202009.aca700334d5b1bbaa3422b3f@magnetkern.de> In-Reply-To: <d9f43350-fbdb-7280-cc67-831accc08e87@selasky.org> References: <20200625121052.e9f7e7cbeb68fad264ec80a9@magnetkern.de> <20200625195943.a6b32addb3c66c3294ed78ef@magnetkern.de> <d9f43350-fbdb-7280-cc67-831accc08e87@selasky.org>
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On Thu, 25 Jun 2020 20:16:14 +0200 Hans Petter Selasky <hps@selasky.org> wrote: > Hi, > > > On 2020-06-25 19:59, Jan Behrens wrote: > > In both cases there is an issue when calling the libusb_reset_device() > > function. > > Unless the device requires it, libusb_reset_device(), will only > re-enumerate the device. Beware that this only is allowed if you are > running the application as root. Else libusb_reset_device() will be a > no-operation. But in my case, the call causes the program to abort (due to returning an error status, I assume). This is the context where the SoapySDR driver calls libusb_reset_device(): https://github.com/myriadrf/LimeSuite/blob/1c1c202f9a6ae4bb34068b6f3f576f7f8e74c7f1/src/ConnectionFTDI/ConnectionFT601.cpp#L212 > > --HPS > Regards, Janhome | help
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