Date: Sat, 27 Jun 2020 18:04:20 +0200 From: Gary Jennejohn <gljennjohn@gmail.com> To: Tomasz CEDRO <tomek@cedro.info> Cc: Jan Behrens <jbe-mlist@magnetkern.de>, "freebsd-usb@FreeBSD.org" <freebsd-usb@freebsd.org> Subject: Re: USB reset fails when using a LimeSDR Mini on FreeBSD Message-ID: <20200627180420.4b8012fb@ernst.home> In-Reply-To: <CAM8r67DqZzje=JnrT_R3d6Uo_NxjvGsvpydd1NOTrJHU2jHzQA@mail.gmail.com> References: <20200625121052.e9f7e7cbeb68fad264ec80a9@magnetkern.de> <CAM8r67DFFeFCHMh6mAxw=x2LKYnFGwasOLgceo-EQSMOvMHbeg@mail.gmail.com> <20200625200849.6af81489a80c2f97d4f89ee6@magnetkern.de> <CAM8r67AE1K9AK%2BaL4RCn6_BWajvzKO7K99bYZMdH0mr-HQdyGw@mail.gmail.com> <20200625224522.44d6584465cb6e20d17be320@magnetkern.de> <0ec3e5a3-7f31-d1cd-6862-6066c431aa80@selasky.org> <20200626135151.e5542cf97fad213c4ad661f2@magnetkern.de> <5c0729f9-9e98-52f7-a5cb-6c5dfd2287a3@selasky.org> <20200626172851.872f3a08fa6e632666683230@magnetkern.de> <CAM8r67AF%2BfGiqBr9A0863Za_zR-fG1FxGfNAqEvvafW=wTRmyQ@mail.gmail.com> <20200627144419.f14371695d9b62ea99106c4a@magnetkern.de> <CAM8r67DTKdj0%2BhkOegjBj-ywzWFq2CnS2sQed0mibSUeGp6HSQ@mail.gmail.com> <20200627173604.7f7b7777140e66dbad812fc7@magnetkern.de> <CAM8r67DqZzje=JnrT_R3d6Uo_NxjvGsvpydd1NOTrJHU2jHzQA@mail.gmail.com>
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On Sat, 27 Jun 2020 17:53:01 +0200 Tomasz CEDRO <tomek@cedro.info> wrote: > Another idea: are you sure you are using valid usb cable and capable usb > port? Please try with another short length certified cable and use direct > usb 3.0 port with no usb hub. Cables and HUBs (even those built-in) are the > most common problem :-) > Lookig at the libusb code, libusb_reset_device() only returns an error if resetting the device fails. Resetting the device requires making ioctl() calls into the kernel. ioctl() calls pretty much always require root permissions. -- Gary Jennejohn
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