[PATCH v5 11/12] PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly

[Niklas Cassel]

Since a 64-bit BAR consists of a BAR pair, we need to write to both
BARs in the BAR pair to clear the BAR properly.

Signed-off-by: Niklas Cassel <niklas.cassel@xxxxxxxx>
---
 drivers/pci/dwc/pcie-designware-ep.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pci/dwc/pcie-designware-ep.c b/drivers/pci/dwc/pcie-designware-ep.c
index cc4d8381c1dc..4d304e3ccf24 100644
--- a/drivers/pci/dwc/pcie-designware-ep.c
+++ b/drivers/pci/dwc/pcie-designware-ep.c
@@ -28,6 +28,10 @@ static void __dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar,
 	dw_pcie_dbi_ro_wr_en(pci);
 	dw_pcie_writel_dbi2(pci, reg, 0x0);
 	dw_pcie_writel_dbi(pci, reg, 0x0);
+	if (flags & PCI_BASE_ADDRESS_MEM_TYPE_64) {
+		dw_pcie_writel_dbi2(pci, reg + 4, 0x0);
+		dw_pcie_writel_dbi(pci, reg + 4, 0x0);
+	}
 	dw_pcie_dbi_ro_wr_dis(pci);
 }
 
-- 
2.14.2