From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Betty Dall To: rjw@sisk.pl, bhelgaas@google.com Cc: ying.huang@intel.com, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Betty Dall Subject: [PATCH 2/3] ACPI/APEI: Force fatal AER severity when bus has been reset Date: Tue, 28 May 2013 12:48:48 -0600 Message-Id: <1369766929-4386-3-git-send-email-betty.dall@hp.com> In-Reply-To: <1369766929-4386-1-git-send-email-betty.dall@hp.com> References: <1369766929-4386-1-git-send-email-betty.dall@hp.com> Sender: linux-acpi-owner@vger.kernel.org List-ID: The CPER error record has a reset bit that indicates that the platform has reset the bus. The reset bit can be set for any severity error including recoverable. From the AER code path's perspective, any error is fatal if the bus has been reset. This patch upgrades the severity of the AER recovery to AER_FATAL whenever the CPER error record indicates that the bus has been reset. Signed-off-by: Betty Dall --- drivers/acpi/apei/ghes.c | 21 ++++++++++++++++++++- 1 files changed, 20 insertions(+), 1 deletions(-) diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index d668a8a..4a42afc 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -451,7 +451,26 @@ static void ghes_do_proc(struct ghes *ghes, int aer_severity; devfn = PCI_DEVFN(pcie_err->device_id.device, pcie_err->device_id.function); - aer_severity = cper_severity_to_aer(sev); + /* + * Some Firmware First implementations + * put the device in SBR to contain + * the error. This is indicated by the + * CPER Section Decriptor Flags reset + * bit which means the component must + * be re-initialized or re-enabled + * prior to use. Promoting the AER + * serverity to FATAL will cause the + * AER code to link_reset and allow + * drivers to reprogram their cards. + */ + if (gdata->flags & CPER_SEC_RESET) + aer_severity = cper_severity_to_aer( + CPER_SEV_FATAL); + else + aer_severity = + cper_severity_to_aer(sev); + + aer_recover_queue(pcie_err->device_id.segment, pcie_err->device_id.bus, devfn, aer_severity);