From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1948849AbdE0BUw (ORCPT ); Fri, 26 May 2017 21:20:52 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:56476 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1948860AbdEZXvP (ORCPT ); Fri, 26 May 2017 19:51:15 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B928061481 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=spjoshi@codeaurora.org From: Sarangdhar Joshi To: Ohad Ben-Cohen , Bjorn Andersson , Loic Pallardy Cc: Sarangdhar Joshi , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Stephen Boyd , Trilok Soni Subject: [PATCH v3 2/2] remoteproc: Modify recovery path to use rproc_{start,stop}() Date: Fri, 26 May 2017 16:51:01 -0700 Message-Id: <1495842661-8926-2-git-send-email-spjoshi@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1495842661-8926-1-git-send-email-spjoshi@codeaurora.org> References: <1495842661-8926-1-git-send-email-spjoshi@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Replace rproc_shutdown() by rproc_stop() and rproc_boot() by rproc_start() in the recovery path, in order to avoid remoteproc resources re-allocation overhead and to assist with extracting the coredumps after stopping the remote processor. Signed-off-by: Sarangdhar Joshi --- Changes from v2: * Rebase on top of v4.12-rc1 drivers/remoteproc/remoteproc_core.c | 35 ++++++++++++++++++++++++++--------- 1 file changed, 26 insertions(+), 9 deletions(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index c8cb54b..369ba0f 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1051,23 +1051,40 @@ static int rproc_stop(struct rproc *rproc) */ int rproc_trigger_recovery(struct rproc *rproc) { - dev_err(&rproc->dev, "recovering %s\n", rproc->name); + const struct firmware *firmware_p; + struct device *dev = &rproc->dev; + int ret; + + dev_err(dev, "recovering %s\n", rproc->name); init_completion(&rproc->crash_comp); - /* shut down the remote */ - /* TODO: make sure this works with rproc->power > 1 */ - rproc_shutdown(rproc); + ret = mutex_lock_interruptible(&rproc->lock); + if (ret) + return ret; + + ret = rproc_stop(rproc); + if (ret) + goto unlock_mutex; /* wait until there is no more rproc users */ wait_for_completion(&rproc->crash_comp); - /* - * boot the remote processor up again - */ - rproc_boot(rproc); + /* load firmware */ + ret = request_firmware(&firmware_p, rproc->firmware, dev); + if (ret < 0) { + dev_err(dev, "request_firmware failed: %d\n", ret); + goto unlock_mutex; + } - return 0; + /* boot the remote processor up again */ + ret = rproc_start(rproc, firmware_p); + + release_firmware(firmware_p); + +unlock_mutex: + mutex_unlock(&rproc->lock); + return ret; } /** -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project