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authorH. Peter Anvin <hpa@linux.intel.com>2014-07-30 10:48:00 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2014-07-30 10:48:00 -0700
commitc3107e3c504d3187ed8eac8179494946faff1481 (patch)
treee7615968a55fc9176ee02926ae442e9d8890d5bd /drivers/pci
parent5ccb8225abf2ac51cd023a99f28366ac9823bd0d (diff)
parent594c7255dce7a13cac50cf2470cc56e2c3b0494e (diff)
downloadlinux-c3107e3c504d3187ed8eac8179494946faff1481.tar.bz2
Merge tag 'please-pull-apei' into x86/ras
APEI is currently implemented so that it depends on x86 hardware. The primary dependency is that GHES uses the x86 NMI for hardware error notification and MCE for memory error handling. These patches remove that dependency. Other APEI features such as error reporting via external IRQ, error serialization, or error injection, do not require changes to use them on non-x86 architectures. The following patch set eliminates the APEI Kconfig x86 dependency by making these changes: - treat NMI notification as GHES architecture - HAVE_ACPI_APEI_NMI - group and wrap around #ifdef CONFIG_HAVE_ACPI_APEI_NMI code which is used only for NMI path - identify architectural boxes and abstract it accordingly (tlb flush and MCE) - rework ioremap for both IRQ and NMI context NMI code is kept in ghes.c file since NMI and IRQ context are tightly coupled. Note, these patches introduce no functional changes for x86. The NMI notification feature is hard selected for x86. Architectures that want to use this feature should also provide NMI code infrastructure.
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pci.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 63a54a340863..1c8592b0e146 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3135,8 +3135,13 @@ static int pci_af_flr(struct pci_dev *dev, int probe)
if (probe)
return 0;
- /* Wait for Transaction Pending bit clean */
- if (pci_wait_for_pending(dev, pos + PCI_AF_STATUS, PCI_AF_STATUS_TP))
+ /*
+ * Wait for Transaction Pending bit to clear. A word-aligned test
+ * is used, so we use the conrol offset rather than status and shift
+ * the test bit to match.
+ */
+ if (pci_wait_for_pending(dev, pos + PCI_AF_CTRL,
+ PCI_AF_STATUS_TP << 8))
goto clear;
dev_err(&dev->dev, "transaction is not cleared; proceeding with reset anyway\n");