From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9794CC433EF for ; Tue, 3 May 2022 13:37:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236264AbiECNk7 (ORCPT ); Tue, 3 May 2022 09:40:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236270AbiECNkx (ORCPT ); Tue, 3 May 2022 09:40:53 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E1B0286DE for ; Tue, 3 May 2022 06:37:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id C51C5B81EC8 for ; Tue, 3 May 2022 13:37:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 64728C385A9; Tue, 3 May 2022 13:37:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1651585038; bh=pC4r16VpOZAU3UpHCivxx0M8dwegH2ivWi3e6aerMEA=; h=Subject:To:Cc:From:Date:From; b=Ax1e4ndoWUbEmqVBU/pPp3naxgkCPAeRNPaN4USJ+95K7UTDVkV5ZbCH2chu5eakh 7dw2IZ7XbJyPTxyKMgQ7EWdklEi9G0RljBrbfpWVD5BtjAR/lyrTeqLiiN+yUuw1bs EAnaU7iYZZNLC1OCMC0B9SWd/gjWgj2fP09cWHCQ= Subject: FAILED: patch "[PATCH] tty: n_gsm: fix missing tty wakeup in convergence layer type" failed to apply to 4.9-stable tree To: daniel.starke@siemens.com, gregkh@linuxfoundation.org Cc: From: Date: Tue, 03 May 2022 15:37:10 +0200 Message-ID: <1651585030156107@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 1adf6fee58ca25fb6720b8d34c919dcf5425cc9c Mon Sep 17 00:00:00 2001 From: Daniel Starke Date: Thu, 14 Apr 2022 02:42:19 -0700 Subject: [PATCH] tty: n_gsm: fix missing tty wakeup in convergence layer type 2 gsm_control_modem() informs the virtual tty that more data can be written after receiving a control signal octet via modem status command (MSC). However, gsm_dlci_data() fails to do the same after receiving a control signal octet from the convergence layer type 2 header. Add tty_wakeup() in gsm_dlci_data() for convergence layer type 2 to fix this. Fixes: e1eaea46bb40 ("tty: n_gsm line discipline") Cc: stable@vger.kernel.org Signed-off-by: Daniel Starke Link: https://lore.kernel.org/r/20220414094225.4527-14-daniel.starke@siemens.com Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 23418ee93156..f3fb66be8513 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -1615,6 +1615,7 @@ static void gsm_dlci_data(struct gsm_dlci *dlci, const u8 *data, int clen) tty = tty_port_tty_get(port); if (tty) { gsm_process_modem(tty, dlci, modem, slen); + tty_wakeup(tty); tty_kref_put(tty); } fallthrough;