From owner-svn-src-head@freebsd.org Wed Jan 8 22:45:33 2020 Return-Path: Delivered-To: svn-src-head@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 085001FD68C; Wed, 8 Jan 2020 22:45:33 +0000 (UTC) (envelope-from ian@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) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47tPTm6VQtz4FyW; Wed, 8 Jan 2020 22:45:32 +0000 (UTC) (envelope-from ian@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id DA6271F3AF; Wed, 8 Jan 2020 22:45:32 +0000 (UTC) (envelope-from ian@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 008MjW2M067264; Wed, 8 Jan 2020 22:45:32 GMT (envelope-from ian@FreeBSD.org) Received: (from ian@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 008MjWBY067263; Wed, 8 Jan 2020 22:45:32 GMT (envelope-from ian@FreeBSD.org) Message-Id: <202001082245.008MjWBY067263@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ian set sender to ian@FreeBSD.org using -f From: Ian Lepore Date: Wed, 8 Jan 2020 22:45:32 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r356521 - head/sys/dev/iicbus/mux X-SVN-Group: head X-SVN-Commit-Author: ian X-SVN-Commit-Paths: head/sys/dev/iicbus/mux X-SVN-Commit-Revision: 356521 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Jan 2020 22:45:33 -0000 Author: ian Date: Wed Jan 8 22:45:32 2020 New Revision: 356521 URL: https://svnweb.freebsd.org/changeset/base/356521 Log: Init sc->maxbus to -1, not 0. It represents the highest array index that has a non-NULL child bus stored in it, so the "none" value can't be zero since that's a valid array index. Also, when adding all possible buses because there is no specific per-bus config, there's no need to reset sc->maxbus on each loop iteration, it can be set once after the loop. Modified: head/sys/dev/iicbus/mux/iicmux.c Modified: head/sys/dev/iicbus/mux/iicmux.c ============================================================================== --- head/sys/dev/iicbus/mux/iicmux.c Wed Jan 8 22:16:26 2020 (r356520) +++ head/sys/dev/iicbus/mux/iicmux.c Wed Jan 8 22:45:32 2020 (r356521) @@ -249,6 +249,7 @@ iicmux_attach(device_t dev, device_t busdev, int numbu sc->dev = dev; sc->busdev = busdev; + sc->maxbus = -1; sc->numbuses = numbuses; SYSCTL_ADD_UINT(device_get_sysctl_ctx(sc->dev), @@ -262,7 +263,8 @@ iicmux_attach(device_t dev, device_t busdev, int numbu #ifdef FDT phandle_t child, node, parent; - pcell_t idx; + pcell_t reg; + int idx; /* * Find our FDT node. Child nodes within our node will become our @@ -285,11 +287,12 @@ iicmux_attach(device_t dev, device_t busdev, int numbu * Attach the children represented in the device tree. */ for (child = OF_child(parent); child != 0; child = OF_peer(child)) { - if (OF_getencprop(child, "reg", &idx, sizeof(idx)) == -1) { + if (OF_getencprop(child, "reg", ®, sizeof(reg)) == -1) { device_printf(dev, "child bus missing required 'reg' property\n"); continue; } + idx = (int)reg; if (idx >= sc->numbuses) { device_printf(dev, "child bus 'reg' property %d exceeds the number " @@ -314,9 +317,8 @@ iicmux_attach(device_t dev, device_t busdev, int numbu for (i = 0; i < sc->numbuses; ++i) { sc->childdevs[i] = device_add_child(sc->dev, "iicbus", -1); - if (sc->maxbus < i) - sc->maxbus = i; } + sc->maxbus = sc->numbuses - 1; return (0); }