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 X-Spam-Level: X-Spam-Status: No, score=-18.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20C7EC4338F for ; Fri, 13 Aug 2021 08:22:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 001EB610A5 for ; Fri, 13 Aug 2021 08:22:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233038AbhHMIXY (ORCPT ); Fri, 13 Aug 2021 04:23:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:52912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229605AbhHMIXY (ORCPT ); Fri, 13 Aug 2021 04:23:24 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 71338610A5; Fri, 13 Aug 2021 08:22:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1628842978; bh=x3LT1KfnuyN1eJWitocN7656a+lDv9KVOYDivBO+jGI=; h=Subject:To:From:Date:From; b=Rw3eJ828T4sSFRAWpBTHx7aBuIPapy8OsdN10fh7vPBgqpOT/l9nLA7l0rKnzu36j ysCtu9dWc5SEPi5aqNJot80tpZBybquWyzQ65EemNn6r4MRBjRYuFjp4IS5oKOW5zo wnWsKs135TdfYtOBr5I7Qlw9YwQQtfv4MUAfe+DE= Subject: patch "slimbus: messaging: check for valid transaction id" added to char-misc-linus To: srinivas.kandagatla@linaro.org, gregkh@linuxfoundation.org, stable@vger.kernel.org From: Date: Fri, 13 Aug 2021 10:22:45 +0200 Message-ID: <1628842965173145@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 This is a note to let you know that I've just added the patch titled slimbus: messaging: check for valid transaction id to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From a263c1ff6abe0e66712f40d595bbddc7a35907f8 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Mon, 9 Aug 2021 09:24:26 +0100 Subject: slimbus: messaging: check for valid transaction id In some usecases transaction ids are dynamically allocated inside the controller driver after sending the messages which have generic acknowledge responses. So check for this before refcounting pm_runtime. Without this we would end up imbalancing runtime pm count by doing pm_runtime_put() in both slim_do_transfer() and slim_msg_response() for a single pm_runtime_get() in slim_do_transfer() Fixes: d3062a210930 ("slimbus: messaging: add slim_alloc/free_txn_tid()") Cc: Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20210809082428.11236-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/slimbus/messaging.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/slimbus/messaging.c b/drivers/slimbus/messaging.c index 6097ddc43a35..e5ae26227bdb 100644 --- a/drivers/slimbus/messaging.c +++ b/drivers/slimbus/messaging.c @@ -131,7 +131,8 @@ int slim_do_transfer(struct slim_controller *ctrl, struct slim_msg_txn *txn) goto slim_xfer_err; } } - + /* Initialize tid to invalid value */ + txn->tid = 0; need_tid = slim_tid_txn(txn->mt, txn->mc); if (need_tid) { @@ -163,7 +164,7 @@ int slim_do_transfer(struct slim_controller *ctrl, struct slim_msg_txn *txn) txn->mt, txn->mc, txn->la, ret); slim_xfer_err: - if (!clk_pause_msg && (!need_tid || ret == -ETIMEDOUT)) { + if (!clk_pause_msg && (txn->tid == 0 || ret == -ETIMEDOUT)) { /* * remove runtime-pm vote if this was TX only, or * if there was error during this transaction -- 2.32.0