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[217.226.63.28]) by smtp.gmail.com with ESMTPSA id a15sm15980863wrh.54.2020.07.03.04.12.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Jul 2020 04:12:20 -0700 (PDT) Date: Fri, 3 Jul 2020 13:12:19 +0200 From: Gary Jennejohn To: Hans Petter Selasky Cc: Tomasz CEDRO , "freebsd-usb@FreeBSD.org" Subject: Re: USB reset fails when using a LimeSDR Mini on FreeBSD Message-ID: <20200703131219.510ae4b8@ernst.home> In-Reply-To: References: <20200625121052.e9f7e7cbeb68fad264ec80a9@magnetkern.de> <20200627180420.4b8012fb@ernst.home> <20200702103523.adb0566bcc7b6e354905a8a5@magnetkern.de> <97c8fd11-9200-dff7-4c68-b0b80cc44871@selasky.org> <20200702104743.223e98c325806025704703f2@magnetkern.de> <20200702111538.e7edf0ae8d10ec7ede9acebb@magnetkern.de> <9e14575a-5c8b-28c8-6593-22019a21e7e7@selasky.org> <20200702120655.73d1111e2de81c626be78139@magnetkern.de> <8ac365f3-3d33-4730-622e-e66f29dd5938@selasky.org> <20200702123747.1bdf36b9d2ebe283f7bb855e@magnetkern.de> <20200703095108.7ce5497f53ed4c4a3d7289e3@magnetkern.de> <4fdcdc92-6a0d-5645-0a10-e95d69001d3a@selasky.org> Reply-To: gljennjohn@gmail.com X-Mailer: Claws Mail 3.17.5 (GTK+ 2.24.32; amd64-portbld-freebsd13.0) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 49yskG5Zt1z48S6 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=njhI3ZEH; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of gljennjohn@gmail.com designates 2a00:1450:4864:20::344 as permitted sender) smtp.mailfrom=gljennjohn@gmail.com X-Spamd-Result: default: False [-3.16 / 15.00]; HAS_REPLYTO(0.00)[gljennjohn@gmail.com]; TO_DN_EQ_ADDR_SOME(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; REPLYTO_ADDR_EQ_FROM(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; NEURAL_HAM_SHORT(-0.16)[-0.156]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.01)[-1.008]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; RECEIVED_SPAMHAUS_PBL(0.00)[217.226.63.28:received]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; NEURAL_HAM_LONG(-0.99)[-0.994]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-usb@freebsd.org]; FREEMAIL_REPLYTO(0.00)[gmail.com]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::344:from]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Jul 2020 11:12:23 -0000 On Fri, 3 Jul 2020 11:15:01 +0200 Hans Petter Selasky wrote: > Hi, > > On 2020-07-03 11:06, Tomasz CEDRO wrote: > > +1 for user enabled actions like usb reset and kernel driver detach:-) > > maybe based on a sysctl like usermount, i.e. usb_allow_user_device_reset > > and usb_allow_user_kernel_driver_detach..? > > > > One would allow user to reset a usb device. This is sometimes required to > > restore device or change its configration. > > > > Second would allow user for example to unload ucom driver that is attached > > to a device which does not seem possible right now and causes problem with > > i.e. pyOCD / some debug probes. > > Currently we use PRIV_DRIVER in the USB stack. Not sure how a user gets PRIV_DRIVER rights. > With a few exceptions it looks like root permissions are required per default. The code is in /usr/src/sys/kern/kern_priv.c. > Tomasz: Feel free to suggest a patch for this after testing. > -- Gary Jennejohn