From owner-dev-commits-src-all@freebsd.org Tue May 18 14:16:09 2021 Return-Path: Delivered-To: dev-commits-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id CE0C864E0AE; Tue, 18 May 2021 14:16:09 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Fkyj50yVXz4X5Y; Tue, 18 May 2021 14:16:09 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id DDD58209E9; Tue, 18 May 2021 14:16:08 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 14IEG829010288; Tue, 18 May 2021 14:16:08 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 14IEG8hu010287; Tue, 18 May 2021 14:16:08 GMT (envelope-from git) Date: Tue, 18 May 2021 14:16:08 GMT Message-Id: <202105181416.14IEG8hu010287@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Hans Petter Selasky Subject: git: e5ff940a81b5 - main - Propagate down USB explore error codes, so that failures to enumerate USB HUBs behind USB HUBs are detected and the USB reset counter logic will kick in preventing enumeration of continuously failing ports. MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: hselasky X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: e5ff940a81b56cb236795e0059c44981053f8404 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 May 2021 14:16:10 -0000 The branch main has been updated by hselasky: URL: https://cgit.FreeBSD.org/src/commit/?id=e5ff940a81b56cb236795e0059c44981053f8404 commit e5ff940a81b56cb236795e0059c44981053f8404 Author: Hans Petter Selasky AuthorDate: 2021-05-18 13:52:00 +0000 Commit: Hans Petter Selasky CommitDate: 2021-05-18 14:11:35 +0000 Propagate down USB explore error codes, so that failures to enumerate USB HUBs behind USB HUBs are detected and the USB reset counter logic will kick in preventing enumeration of continuously failing ports. Submitted by: phk@ Tested by: bz@ PR: 237666 MFC after: 1 week Sponsored by: Mellanox Technologies // NVIDIA Networking --- sys/dev/usb/usb_hub.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/sys/dev/usb/usb_hub.c b/sys/dev/usb/usb_hub.c index 6ed30b64b1e0..52ac0a8a7ff7 100644 --- a/sys/dev/usb/usb_hub.c +++ b/sys/dev/usb/usb_hub.c @@ -513,7 +513,7 @@ uhub_explore_sub(struct uhub_softc *sc, struct usb_port *up) usb_error_t err; bus = sc->sc_udev->bus; - err = 0; + err = USB_ERR_NORMAL_COMPLETION; /* get driver added refcount from USB bus */ refcount = bus->driver_added_refcount; @@ -1013,7 +1013,7 @@ uhub_explore(struct usb_device *udev) if (udev->flags.self_suspended) { /* need to wait until the child signals resume */ DPRINTF("Device is suspended!\n"); - return (0); + return (USB_ERR_NORMAL_COMPLETION); } /* @@ -1022,6 +1022,12 @@ uhub_explore(struct usb_device *udev) */ do_unlock = usbd_enum_lock(udev); + /* + * Set default error code to avoid compiler warnings. + * Note that hub->nports cannot be zero. + */ + err = USB_ERR_NORMAL_COMPLETION; + for (x = 0; x != hub->nports; x++) { up = hub->ports + x; portno = x + 1; @@ -1090,13 +1096,11 @@ uhub_explore(struct usb_device *udev) break; } } - err = uhub_explore_sub(sc, up); - if (err) { - /* no device(s) present */ - continue; + + if (uhub_explore_sub(sc, up) == USB_ERR_NORMAL_COMPLETION) { + /* explore succeeded - reset restart counter */ + up->restartcnt = 0; } - /* explore succeeded - reset restart counter */ - up->restartcnt = 0; } if (do_unlock) @@ -1105,8 +1109,7 @@ uhub_explore(struct usb_device *udev) /* initial status checked */ sc->sc_flags |= UHUB_FLAG_DID_EXPLORE; - /* return success */ - return (USB_ERR_NORMAL_COMPLETION); + return (err); } int