[Skiboot] [PATCH] Allow to create slot for downstream port of any switch

[Ilya Kuznetsov]

System vendor may build systems with large PCIe tree with
deeper switch topologies. Currenlty downstream ports slot
creation is limited to one switch. Patch allows to use more
by removing comparison to third parent.

Signed-off-by: Ilya Kuznetsov <ilya at yadro.com>
---
 core/pcie-slot.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/core/pcie-slot.c b/core/pcie-slot.c
index e7013d1e..b12e0fb2 100644
--- a/core/pcie-slot.c
+++ b/core/pcie-slot.c
@@ -544,13 +544,9 @@ struct pci_slot *pcie_slot_create_dynamic(struct phb *phb,
 	if (!phb || !pd || pd->slot)
 		return NULL;
 
-	/* Try to create slot whose details aren't provided by platform.
-	 * We only care the downstream ports of PCIe switch that connects
-	 * to root port.
-	 */
+	/* Try to create slot whose details aren't provided by platform. */
 	if (pd->dev_type != PCIE_TYPE_SWITCH_DNPORT ||
-	    !pd->parent || !pd->parent->parent ||
-	    pd->parent->parent->parent)
+	    !pd->parent || !pd->parent->parent)
 		return NULL;
 
 	ecap = pci_cap(pd, PCI_CFG_CAP_ID_EXP, false);
-- 
2.21.0