pci: layerscape: Fix the disabling of Expansion ROM BAR

The software will still get non-zero Expansion ROM BAR size
even when the BAR_EN bit is cleared. The BAR_EN bit of
register EXP_ROM_BAR_MASK_RC is not working as expected,
so this patch changes to mask all the bits.

Fixes: 80afc63fc342 ("pci: layerscape: add pci driver based on DM")
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c
index 47394bdba71ab90df12ceb191f45dfbfc4aa7100..22d10cf737cf3199408c0a87ce5c2f7b39bd76ed 100644 (file)
--- a/drivers/pci/pcie_layerscape.c
+++ b/drivers/pci/pcie_layerscape.c
@@ -325,7 +325,7 @@ static void ls_pcie_disable_bars(struct ls_pcie *pcie)
 
        dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_BASE_ADDRESS_0);
        dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_BASE_ADDRESS_1);
-       dbi_writel(pcie, 0, PCIE_CS2_OFFSET + PCI_ROM_ADDRESS1);
+       dbi_writel(pcie, 0xfffffffe, PCIE_CS2_OFFSET + PCI_ROM_ADDRESS1);
 }
 
 static void ls_pcie_setup_ctrl(struct ls_pcie *pcie)