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[POWERPC] EEH: verify state change 

After requesting a state change, verify that the state change
actually ocurred, and the system ends up in the expected state.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Linas Vepstas 2007-03-19 14:59:59 -05:00 committed by Paul Mackerras
parent d0ab95ca98
commit fa1be476a2
2 changed files with 10 additions and 2 deletions
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6
arch/powerpc/platforms/pseries/eeh.c
View File

@ -527,9 +527,13 @@ rtas_pci_enable(struct pci_dn *pdn, int function)
function);
if (rc)
printk(KERN_WARNING "EEH: Cannot enable function %d, err=%d dn=%s\n",
printk(KERN_WARNING "EEH: Unexpected state change %d, err=%d dn=%s\n",
function, rc, pdn->node->full_name);
rc = eeh_wait_for_slot_status (pdn, PCI_BUS_RESET_WAIT_MSEC);
if ((rc == 4) && (function == EEH_THAW_MMIO))
return 0;
return rc;
}

6
arch/powerpc/platforms/pseries/eeh_driver.c
View File

@ -300,7 +300,7 @@ static int eeh_reset_device (struct pci_dn *pe_dn, struct pci_bus *bus)
/* The longest amount of time to wait for a pci device
* to come back on line, in seconds.
*/
#define MAX_WAIT_FOR_RECOVERY 15
#define MAX_WAIT_FOR_RECOVERY 150
struct pci_dn * handle_eeh_events (struct eeh_event *event)
{
@ -393,6 +393,8 @@ struct pci_dn * handle_eeh_events (struct eeh_event *event)
if (result == PCI_ERS_RESULT_CAN_RECOVER) {
rc = rtas_pci_enable(frozen_pdn, EEH_THAW_MMIO);
if (rc < 0)
goto hard_fail;
if (rc) {
result = PCI_ERS_RESULT_NEED_RESET;
} else {
@ -405,6 +407,8 @@ struct pci_dn * handle_eeh_events (struct eeh_event *event)
if (result == PCI_ERS_RESULT_CAN_RECOVER) {
rc = rtas_pci_enable(frozen_pdn, EEH_THAW_DMA);
if (rc < 0)
goto hard_fail;
if (rc)
result = PCI_ERS_RESULT_NEED_RESET;
else