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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 E72D7C07E9E for ; Mon, 12 Jul 2021 08:14:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C5ED561403 for ; Mon, 12 Jul 2021 08:14:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354480AbhGLIPc (ORCPT ); Mon, 12 Jul 2021 04:15:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:43074 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345178AbhGLH3m (ORCPT ); Mon, 12 Jul 2021 03:29:42 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 107C061221; Mon, 12 Jul 2021 07:25:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626074758; bh=sooO2MLxM7bLD2+xTCs+FYPJ7Y621Jb1smqCOhz/UK0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CFQLWW6KA/V4mtVplRosdhN1fqo5Cx6fbkaqQN835SM9XvC6lcbvJEFDJ5UrNpOb2 EFobUEeYKFGz61XJyESmYGAhNg63/x4Yy+a5M2GlNQIziU4ZcNYduCkxeGY1/S0fJa HYILIOzkLhR3pPDfPohnaRdJWJqA7AIS6oCE6wuU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sibi Sankar , Bjorn Andersson , Manivannan Sadhasivam , Jassi Brar Subject: [PATCH 5.12 688/700] mailbox: qcom-ipcc: Fix IPCC mbox channel exhaustion Date: Mon, 12 Jul 2021 08:12:51 +0200 Message-Id: <20210712061049.144299677@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060924.797321836@linuxfoundation.org> References: <20210712060924.797321836@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sibi Sankar commit d6fbfdbc12745ce24bcd348dbf7e652353b3e59c upstream. Fix IPCC (Inter-Processor Communication Controller) channel exhaustion by setting the channel private data to NULL on mbox shutdown. Err Logs: remoteproc: MBA booted without debug policy, loading mpss remoteproc: glink-edge: failed to acquire IPC channel remoteproc: failed to probe subdevices for remoteproc: -16 Fixes: fa74a0257f45 ("mailbox: Add support for Qualcomm IPCC") Signed-off-by: Sibi Sankar Cc: stable@vger.kernel.org Reviewed-by: Bjorn Andersson Reviewed-by: Manivannan Sadhasivam Signed-off-by: Jassi Brar Signed-off-by: Greg Kroah-Hartman --- drivers/mailbox/qcom-ipcc.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/mailbox/qcom-ipcc.c +++ b/drivers/mailbox/qcom-ipcc.c @@ -155,6 +155,11 @@ static int qcom_ipcc_mbox_send_data(stru return 0; } +static void qcom_ipcc_mbox_shutdown(struct mbox_chan *chan) +{ + chan->con_priv = NULL; +} + static struct mbox_chan *qcom_ipcc_mbox_xlate(struct mbox_controller *mbox, const struct of_phandle_args *ph) { @@ -184,6 +189,7 @@ static struct mbox_chan *qcom_ipcc_mbox_ static const struct mbox_chan_ops ipcc_mbox_chan_ops = { .send_data = qcom_ipcc_mbox_send_data, + .shutdown = qcom_ipcc_mbox_shutdown, }; static int qcom_ipcc_setup_mbox(struct qcom_ipcc *ipcc)