[PATCH V4 10/11] powerpc/powernv: use "compound" as the child's list_head for compound PE

[Wei Yang <weiyang@linux.vnet.ibm.com>]

Commit 262af557dd75(powerpc/powernv: Enable M64 aperatus for PHB3)
introduces the concept of compound PE, and they are linked together to
master PE's slaves lish_head with the list field. While this field is
usually used to linked to the phb->ioda.pe_list to represents the PE is
used.

This patch introduces a field "compound" to link those compound PEs.

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
---
 arch/powerpc/platforms/powernv/pci-ioda.c |    8 ++++----
 arch/powerpc/platforms/powernv/pci.h      |    1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 920c252..843457b 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -344,7 +344,7 @@ done:
 		} else {
 			pe->flags |= PNV_IODA_PE_SLAVE;
 			pe->master = master_pe;
-			list_add_tail(&pe->list, &master_pe->slaves);
+			list_add_tail(&pe->compound, &master_pe->slaves);
 		}
 	}
 
@@ -428,7 +428,7 @@ static void pnv_ioda_freeze_pe(struct pnv_phb *phb, int pe_no)
 	if (!(pe->flags & PNV_IODA_PE_MASTER))
 		return;
 
-	list_for_each_entry(slave, &pe->slaves, list) {
+	list_for_each_entry(slave, &pe->slaves, compound) {
 		rc = opal_pci_eeh_freeze_set(phb->opal_id,
 					     slave->pe_number,
 					     OPAL_EEH_ACTION_SET_FREEZE_ALL);
@@ -464,7 +464,7 @@ static int pnv_ioda_unfreeze_pe(struct pnv_phb *phb, int pe_no, int opt)
 		return 0;
 
 	/* Clear frozen state for slave PEs */
-	list_for_each_entry(slave, &pe->slaves, list) {
+	list_for_each_entry(slave, &pe->slaves, compound) {
 		rc = opal_pci_eeh_freeze_clear(phb->opal_id,
 					     slave->pe_number,
 					     opt);
@@ -516,7 +516,7 @@ static int pnv_ioda_get_pe_state(struct pnv_phb *phb, int pe_no)
 	if (!(pe->flags & PNV_IODA_PE_MASTER))
 		return state;
 
-	list_for_each_entry(slave, &pe->slaves, list) {
+	list_for_each_entry(slave, &pe->slaves, compound) {
 		rc = opal_pci_eeh_freeze_status(phb->opal_id,
 						slave->pe_number,
 						&fstate,
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index 070ee88..540ab1e 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -73,6 +73,7 @@ struct pnv_ioda_pe {
 	/* PEs in compound case */
 	struct pnv_ioda_pe	*master;
 	struct list_head	slaves;
+	struct list_head	compound;
 
 	/* Link in list of PE#s */
 	struct list_head	dma_link;
-- 
1.7.9.5