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powerpc/eeh: Remove EEH_PE_PHB_DEAD

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The PE state (for eeh_pe instance) EEH_PE_PHB_DEAD is duplicate to
EEH_PE_ISOLATED. Originally, those PHBs (PHB PE) with EEH_PE_PHB_DEAD
would be removed from the system. However, it's safe to replace
that with EEH_PE_ISOLATED.

The patch also clear EEH_PE_RECOVERING after fenced PHB has been handled,
either failure or success. It makes the PHB PE state consistent with:

	PHB functions normally		  NONE
	PHB has been removed		  EEH_PE_ISOLATED
	PHB fenced, recovery in progress  EEH_PE_ISOLATED | RECOVERING

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan
2014-04-24 18:00:07 +10:00
committed by Benjamin Herrenschmidt
parent e4565362c7
commit 9e04937560
3 changed files with 7 additions and 14 deletions
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10
arch/powerpc/kernel/eeh_driver.c
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@@ -682,8 +682,7 @@ static void eeh_handle_special_event(void)
phb_pe = eeh_phb_pe_get(hose);
if (!phb_pe) continue;
eeh_pe_state_mark(phb_pe,
EEH_PE_ISOLATED | EEH_PE_PHB_DEAD);
eeh_pe_state_mark(phb_pe, EEH_PE_ISOLATED);
}
eeh_serialize_unlock(flags);
@@ -699,8 +698,7 @@ static void eeh_handle_special_event(void)
eeh_remove_event(pe);
if (rc == EEH_NEXT_ERR_DEAD_PHB)
eeh_pe_state_mark(pe,
EEH_PE_ISOLATED | EEH_PE_PHB_DEAD);
eeh_pe_state_mark(pe, EEH_PE_ISOLATED);
else
eeh_pe_state_mark(pe,
EEH_PE_ISOLATED | EEH_PE_RECOVERING);
@@ -724,12 +722,14 @@ static void eeh_handle_special_event(void)
if (rc == EEH_NEXT_ERR_FROZEN_PE ||
rc == EEH_NEXT_ERR_FENCED_PHB) {
eeh_handle_normal_event(pe);
eeh_pe_state_clear(pe, EEH_PE_RECOVERING);
} else {
pci_lock_rescan_remove();
list_for_each_entry(hose, &hose_list, list_node) {
phb_pe = eeh_phb_pe_get(hose);
if (!phb_pe ||
!(phb_pe->state & EEH_PE_PHB_DEAD))
!(phb_pe->state & EEH_PE_ISOLATED) ||
(phb_pe->state & EEH_PE_RECOVERING))
continue;
/* Notify all devices to be down */