[POWERPC] EEH: Add clarifying messages.
There are multiple code patchs tht resuls in a "permanent
failure"; when examining rare events, it can be hard to see
which was taken. This patch adds printk's to assist.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index a4c0bf8..550fad2 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -367,8 +367,10 @@
*/
if ((event->state == pci_channel_io_perm_failure) &&
((event->time_unavail <= 0) ||
- (event->time_unavail > MAX_WAIT_FOR_RECOVERY*1000)))
+ (event->time_unavail > MAX_WAIT_FOR_RECOVERY*1000))) {
+ printk(KERN_WARNING "EEH: Permanent failure\n");
goto hard_fail;
+ }
eeh_slot_error_detail(frozen_pdn, 1 /* Temporary Error */);
printk(KERN_WARNING
@@ -390,8 +392,10 @@
*/
if (result == PCI_ERS_RESULT_NONE) {
rc = eeh_reset_device(frozen_pdn, frozen_bus);
- if (rc)
+ if (rc) {
+ printk(KERN_WARNING "EEH: Unable to reset, rc=%d\n", rc);
goto hard_fail;
+ }
}
/* If all devices reported they can proceed, then re-enable MMIO */
@@ -417,21 +421,27 @@
}
/* If any device has a hard failure, then shut off everything. */
- if (result == PCI_ERS_RESULT_DISCONNECT)
+ if (result == PCI_ERS_RESULT_DISCONNECT) {
+ printk(KERN_WARNING "EEH: Device driver gave up\n");
goto hard_fail;
+ }
/* If any device called out for a reset, then reset the slot */
if (result == PCI_ERS_RESULT_NEED_RESET) {
rc = eeh_reset_device(frozen_pdn, NULL);
- if (rc)
+ if (rc) {
+ printk(KERN_WARNING "EEH: Cannot reset, rc=%d\n", rc);
goto hard_fail;
+ }
result = PCI_ERS_RESULT_NONE;
pci_walk_bus(frozen_bus, eeh_report_reset, &result);
}
/* All devices should claim they have recovered by now. */
- if (result != PCI_ERS_RESULT_RECOVERED)
+ if (result != PCI_ERS_RESULT_RECOVERED) {
+ printk(KERN_WARNING "EEH: Not recovered\n");
goto hard_fail;
+ }
/* Tell all device drivers that they can resume operations */
pci_walk_bus(frozen_bus, eeh_report_resume, NULL);