From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: ACJfBovsA5MHqsFOnWJmRFJXQYlDgxQiX6p8JZbi+shgBh1N9P+Sc2x7cVPeplnqZTqi6D1C12LC ARC-Seal: i=1; a=rsa-sha256; t=1516360229; cv=none; d=google.com; s=arc-20160816; b=riJBqDckGyNS3NyInxVdmrnvuu+aarrg3+rsGgIF9BlVk5jO00UmthHEYbmvA7UE+9 WaaC/ssuO4hmB5Y8V3FQ0h4d6ed8EGTxjrAoM/JAmbpe39O2xjwa2/jaNrgqkHhtaqLA DD+Zl/nzVFIQBuGcTQCJpkaDO3uZ0w8RCfBhxLt9Pn6FvzmIVihsgx4nUcOh1B6SYxrS 3klZHQhTRhz0QHQ1hNLKxhX7d65bBgqaPOeqhJoGOdmRAFQSStnxzqnieR3EfbBfs0yM ZJ9tQnq1bbkf1ch1ypYVNQ2F5blvysX9/i1vNZZzHjQC3to/4lJ+gqf7P1Ri6QfU9WIH /BOg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :dmarc-filter:dkim-signature:dkim-signature :arc-authentication-results; bh=BQ9xOmpdx+7MmhmvbBgaPrXlqHbjNItDnJ/z45n11ew=; b=xL2cutWlxIVr5AX482/2OTxBsztiN/8PRllCTn4qJ883hmanjtv1tMxS6GTSGSdIgl HQngMs4b5iFnkF5bTCVYg+zL7ahZI9yspMWL+KR67eF0hzbnhl3MRrlWMj2XrJqKvGgS mYfVoo9lihcMrOrJfbc89Ak+9K9IjS1FXRKYFP40QTMaf637M+hKvX5D/2G5FJs+5dK5 LtlO0YoGh9y2wiMXTVqpaAkcY211RadcwquQCRTnGymd+4H6ugJ/JRdy5VtG0wtw982+ YMe15J0uXAGieZfNkiauDv1OPNSGRZ8rMS6dgDHr7AMpKtzufKJjXTYAtvzPxIGhNusn Lp0w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=L98P/CS+; dkim=pass header.i=@codeaurora.org header.s=default header.b=TnKcH3q/; spf=pass (google.com: domain of poza@codeaurora.org designates 198.145.29.96 as permitted sender) smtp.mailfrom=poza@codeaurora.org Authentication-Results: mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=L98P/CS+; dkim=pass header.i=@codeaurora.org header.s=default header.b=TnKcH3q/; spf=pass (google.com: domain of poza@codeaurora.org designates 198.145.29.96 as permitted sender) smtp.mailfrom=poza@codeaurora.org DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D9D8E60452 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=poza@codeaurora.org From: Oza Pawandeep To: Bjorn Helgaas , Philippe Ombredanne , Thomas Gleixner , Greg Kroah-Hartman , Kate Stewart , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Dongdong Liu , Keith Busch , Wei Zhang , Sinan Kaya , Timur Tabi Cc: Oza Pawandeep Subject: [PATCH v6 3/7] PCI/ERR: add mutex to synchronize recovery Date: Fri, 19 Jan 2018 16:40:00 +0530 Message-Id: <1516360204-1586-4-git-send-email-poza@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1516360204-1586-1-git-send-email-poza@codeaurora.org> References: <1516360204-1586-1-git-send-email-poza@codeaurora.org> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1590018944024444188?= X-GMAIL-MSGID: =?utf-8?q?1590018944024444188?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: This patch protects pci_do_recovery with mutex. Signed-off-by: Oza Pawandeep diff --git a/drivers/pci/pcie/pcie-err.c b/drivers/pci/pcie/pcie-err.c index a532fe0..8318c84 100644 --- a/drivers/pci/pcie/pcie-err.c +++ b/drivers/pci/pcie/pcie-err.c @@ -20,6 +20,8 @@ #include #include "portdrv.h" +static DEFINE_MUTEX(pci_err_recovery_lock); + struct aer_broadcast_data { enum pci_channel_state state; enum pci_ers_result result; @@ -283,6 +285,8 @@ void pci_do_recovery(struct pci_dev *dev, int severity) pci_ers_result_t status, result = PCI_ERS_RESULT_RECOVERED; enum pci_channel_state state; + mutex_lock(&pci_err_recovery_lock); + if (severity == AER_FATAL) state = pci_channel_io_frozen; else @@ -326,9 +330,11 @@ void pci_do_recovery(struct pci_dev *dev, int severity) report_resume); dev_info(&dev->dev, "Device recovery successful\n"); + mutex_unlock(&pci_err_recovery_lock); return; failed: /* TODO: Should kernel panic here? */ dev_info(&dev->dev, "Device recovery failed\n"); + mutex_unlock(&pci_err_recovery_lock); } -- Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc., a Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.