powerpc/eeh: Skip finding bus until after failure reporting

In eeh_handle_special_event(), eeh_pe_bus_get() is called before calling
eeh_report_failure() on every device under a PE.  If a PE was missing a
bus for some reason, the error would occur before reporting failure, even
though eeh_report_failure() doesn't require a bus.

Fix this by moving the bus retrieval and error check after the
eeh_report_failure() calls.

Signed-off-by: Russell Currey <ruscur@russell.cc>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 29aa8d1ce273..a62be72da274 100644
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -993,6 +993,8 @@ static void eeh_handle_special_event(void)
 
                                 /* Notify all devices to be down */
                                 eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
+                                eeh_pe_dev_traverse(pe,
+                                        eeh_report_failure, NULL);
                                 bus = eeh_pe_bus_get(phb_pe);
                                 if (!bus) {
                                         pr_err("%s: Cannot find PCI bus for "
@@ -1002,8 +1004,6 @@ static void eeh_handle_special_event(void)
                                                pe->addr);
                                         break;
                                 }
-                                eeh_pe_dev_traverse(pe,
-                                        eeh_report_failure, NULL);
                                 pci_hp_remove_devices(bus);
                         }
                         pci_unlock_rescan_remove();