On Thu, Jun 6, 2013 at 12:10 PM, Betty Dall <betty.dall@xxxxxx> wrote: > This patch set fixes a bug on platforms that use firmware first AER. > Firmware can leave the root port in Secondary Bus Reset (SBR) and > communicate this to the OS through the "reset" bit in the flags field > of the HEST table and associated CPER records. Firmware wants to do this > so that the error is contained and the hardware is in a known state. > > Without these patches, the root port stays in SBR and the device drivers > cannot recover. These patches recognize when the firmware first root port > is in SBR and bring the root port out of SBR so the devices under the root > port can recover. > > The changes have been tested on systems with firmware first that set the > "reset" bit by injecting various hardware errors. The errors successfully > recover. > > Changes since v1: > Fixed a typo in the comment of patch 2. > Removed incorrect setting of reset bit in patch 3. > > Changes since v2: > The v2 patch 1/3 was re-written by Bjorn Helgaas and is now patches 1/6 > through 3/6. > The v2 patch 2/3 is now 5/6 and changed to directly use the AER_FATAL define > and introduced patch 4/6 to move the defines to a public header file. > The v2 patch 3/3 is now 6/6 and uses the same default reset link function for > both Downstream Ports and Root Ports. > > Signed-off-by: Betty Dall <betty.dall@xxxxxx> > --- > Betty Dall (6): > PCI/AER: Don't parse HEST table for non-PCIe devices > PCI/AER: Factor out HEST device type matching > PCI/AER: Set dev->__aer_firmware_first only for matching devices > PCI/ACPI: Move AER severity defines to aer.h > ACPI/APEI: Force fatal AER severity when bus has been reset > PCI/AER: Provide reset_link for firmware first root port > --- > drivers/acpi/apei/ghes.c | 10 +++++++ > drivers/pci/pcie/aer/aerdrv.h | 4 --- > drivers/pci/pcie/aer/aerdrv_acpi.c | 47 ++++++++++++++++++----------------- > drivers/pci/pcie/aer/aerdrv_core.c | 17 +++++++------ > include/linux/aer.h | 16 +++++++---- > 5 files changed, 53 insertions(+), 41 deletions(-) I put these on http://git.kernel.org/cgit/linux/kernel/git/helgaas/pci.git/log/?h=pci/betty-aer-v3 I'll merge them into -next for v3.11 soon. Thanks, Betty! -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
