From patchwork Wed Sep 18 17:19:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 11150827 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B515B14E5 for ; Wed, 18 Sep 2019 17:19:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 92510207FC for ; Wed, 18 Sep 2019 17:19:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="rO9i/cqL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732120AbfIRRTZ (ORCPT ); Wed, 18 Sep 2019 13:19:25 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:41252 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732112AbfIRRTY (ORCPT ); Wed, 18 Sep 2019 13:19:24 -0400 Received: by mail-pg1-f195.google.com with SMTP id x15so211390pgg.8 for ; Wed, 18 Sep 2019 10:19:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=VwSAewYHioEBjS31iqIfRjVrZyDonRdWcj1Y+TfsqH4=; b=rO9i/cqLekYgyKdKCnFYjAL4R/QkPCECSyUyb7g2A+JKQKpKGHGHs2JQa91AMbG/2w 1lED6OUbgkoFnKNsS8sAuVKoGcJ/HX7iMbXflFVJP+G0Eoh2jir2EAjBir/87kMiVIbH TGN86ho4VviITmkJju5fHnGtLVyX20eLopp2OR9zx/XrG+lbFUgF9ho8nWFvUVmMOosg ztCiiJk0oz5dDSW0jP1/X7SxOt1poyhGRX1OYbu824rVveyFMp8Afqmdm2rA7sVRW6qe yIIF8ArmWEbZl7z3D7gYV6yBb+uq9Yj6DuuVk/BKO+JoxTbwTZEfgolB3XIWu87dAOFJ 5AUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=VwSAewYHioEBjS31iqIfRjVrZyDonRdWcj1Y+TfsqH4=; b=t85rJvUajuhbPykqOfaAo0+XqI/rQZZmfX+9zMDGMQvQPHMklxVzRYcPITeG1SdOZP pNc0/YoH8ENhk2sDGkMbMdvUleV6zYjUZl6fWdwakUUXzyECMow8HjR+mNC9xbfM2ce8 9UwOmcbU5yMM+S7EwfVl/wHpZHOwCbO2VYuGtJm4wAOtJAAMqwr2rC7l1IeeyxlOtp+0 ONTUQoliow3h/E93iirn7O0b2x4qtj1FmQ2xXRfJ0cS0WPHXxE2fIJr2CUcsC1ChKIX4 XfGnpUPfMOjFcDkGDFMF5DVBuAfb+Mw3zZX636Qe7VIN87hKscvviHdqi1Nq35rzkNfI 4tMA== X-Gm-Message-State: APjAAAUAcpWuMfOsd5VPCh+8/gzoEByVRsUjtTdbH87M/sT+itF+s6K/ GmmFjlA0MEj8iLXBLf+T3wJghw== X-Google-Smtp-Source: APXvYqz6KBiLBnvTbiv1tlhJ561p18GEHMN8vVjD8bUsFTROEBscCpnd0MazHXczVzILrhpz3xg50g== X-Received: by 2002:a65:6557:: with SMTP id a23mr4976164pgw.439.1568827163712; Wed, 18 Sep 2019 10:19:23 -0700 (PDT) Received: from localhost.localdomain (104-188-17-28.lightspeed.sndgca.sbcglobal.net. [104.188.17.28]) by smtp.gmail.com with ESMTPSA id y4sm2614981pjn.19.2019.09.18.10.19.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 18 Sep 2019 10:19:23 -0700 (PDT) From: Bjorn Andersson To: Ohad Ben-Cohen , Bjorn Andersson , Srinivas Kandagatla , Jorge Ramirez Cc: linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH 3/6] rpmsg: glink: Put an extra reference during cleanup Date: Wed, 18 Sep 2019 10:19:13 -0700 Message-Id: <20190918171916.4039-4-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190918171916.4039-1-bjorn.andersson@linaro.org> References: <20190918171916.4039-1-bjorn.andersson@linaro.org> Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org From: Chris Lew In a remote processor crash scenario, there is no guarantee the remote processor sent close requests before it went into a bad state. Remove the reference that is normally handled by the close command in the so channel resources can be released. Fixes: b4f8e52b89f6 ("rpmsg: Introduce Qualcomm RPM glink driver") Cc: stable@vger.kernel.org Signed-off-by: Chris Lew Reported-by: Srinivas Kandagatla Signed-off-by: Bjorn Andersson --- drivers/rpmsg/qcom_glink_native.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 72ed671f5dcd..21fd2ae5f7f1 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -1641,6 +1641,10 @@ void qcom_glink_native_remove(struct qcom_glink *glink) idr_for_each_entry(&glink->lcids, channel, cid) kref_put(&channel->refcount, qcom_glink_channel_release); + /* Release any defunct local channels, waiting for close-req */ + idr_for_each_entry(&glink->rcids, channel, cid) + kref_put(&channel->refcount, qcom_glink_channel_release); + idr_destroy(&glink->lcids); idr_destroy(&glink->rcids); spin_unlock_irqrestore(&glink->idr_lock, flags);