From owner-freebsd-bugs@freebsd.org Sat Jan 23 06:28:25 2016 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 13168A8E8A6 for ; Sat, 23 Jan 2016 06:28:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id DD266160F for ; Sat, 23 Jan 2016 06:28:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u0N6SOhQ019154 for ; Sat, 23 Jan 2016 06:28:24 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 206516] [patch] Teach ofw_bus_parse_xref_list_alloc to be able to return the length of the parsed list Date: Sat, 23 Jan 2016 06:28:24 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.0-CURRENT X-Bugzilla-Keywords: patch X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: sgalabov@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status keywords bug_severity priority component assigned_to reporter attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Jan 2016 06:28:25 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D206516 Bug ID: 206516 Summary: [patch] Teach ofw_bus_parse_xref_list_alloc to be able to return the length of the parsed list Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: New Keywords: patch Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: sgalabov@gmail.com Keywords: patch Created attachment 165990 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D165990&action= =3Dedit Teach ofw_bus_parse_xref_list_alloc to be able to return the length of the parsed list Currently, there is no easy way to know in advance how many entries a list parsed by ofw_bus_parse_xref_list_alloc() in sys/dev/ofw/ofw_bus_subr.c has. The attached patch allows us to pass an idx of -1 to ofw_bus_parse_xref_list_alloc(), in which case it would either return an er= ror (negative) or the number of entries in the parsed list (non-negative). This would be useful if we don't know in advance how many entries such a li= st has, but we need to get them (and store them) all - we can call ofw_bus_parse_xref_list_alloc with idx =3D -1, see how many entries to allo= cate memory for, and then loop through the entries to get each one of them. --=20 You are receiving this mail because: You are the assignee for the bug.=