From owner-svn-src-all@freebsd.org Sun Mar 29 23:01:45 2020 Return-Path: Delivered-To: svn-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 1861C2673AF; Sun, 29 Mar 2020 23:01:45 +0000 (UTC) (envelope-from wulf@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 48rB133x5Mz4XX7; Sun, 29 Mar 2020 23:01:43 +0000 (UTC) (envelope-from wulf@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 313FE8B0E; Sun, 29 Mar 2020 23:01:37 +0000 (UTC) (envelope-from wulf@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 02TN1afo087423; Sun, 29 Mar 2020 23:01:36 GMT (envelope-from wulf@FreeBSD.org) Received: (from wulf@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 02TN1aHG087422; Sun, 29 Mar 2020 23:01:36 GMT (envelope-from wulf@FreeBSD.org) Message-Id: <202003292301.02TN1aHG087422@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: wulf set sender to wulf@FreeBSD.org using -f From: Vladimir Kondratyev Date: Sun, 29 Mar 2020 23:01:36 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r359429 - head/sys/dev/evdev X-SVN-Group: head X-SVN-Commit-Author: wulf X-SVN-Commit-Paths: head/sys/dev/evdev X-SVN-Commit-Revision: 359429 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Mar 2020 23:01:45 -0000 Author: wulf Date: Sun Mar 29 23:01:36 2020 New Revision: 359429 URL: https://svnweb.freebsd.org/changeset/base/359429 Log: evdev: return error rather than zero-length data on blocked read() if blocked process has been woken up by evdev device destruction. MFC after: 2 weeks Modified: head/sys/dev/evdev/cdev.c Modified: head/sys/dev/evdev/cdev.c ============================================================================== --- head/sys/dev/evdev/cdev.c Sun Mar 29 23:00:33 2020 (r359428) +++ head/sys/dev/evdev/cdev.c Sun Mar 29 23:01:36 2020 (r359429) @@ -217,6 +217,8 @@ evdev_read(struct cdev *dev, struct uio *uio, int iofl client->ec_blocked = true; ret = mtx_sleep(client, &client->ec_buffer_mtx, PCATCH, "evread", 0); + if (ret == 0 && client->ec_revoked) + ret = ENODEV; } } }