Use platform_get_resource_byname() instead of platform_get_resource() which uses index to get memory resources. While at that get the memory resource defined specifically for configuration space instead of deriving the configuration space address from dbics address space. Since pci-keystone driver has never worked out of the box in mainline kernel, dt backward compatibility is ignored. Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx> --- drivers/pci/controller/dwc/pci-keystone.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index 505e13b1197d..fe522b8c981f 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -49,7 +49,6 @@ #define OB_SIZE 0x030 #define CFG_PCIM_WIN_SZ_IDX 3 #define CFG_PCIM_WIN_CNT 32 -#define SPACE0_REMOTE_CFG_OFFSET 0x1000 #define OB_OFFSET_INDEX(n) (0x200 + (8 * n)) #define OB_OFFSET_HI(n) (0x204 + (8 * n)) @@ -677,21 +676,19 @@ static int __init ks_pcie_add_pcie_port(struct keystone_pcie *ks_pcie, struct resource *res; int ret; - /* Index 0 is the config reg. space address */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbics"); pci->dbi_base = devm_pci_remap_cfg_resource(dev, res); if (IS_ERR(pci->dbi_base)) return PTR_ERR(pci->dbi_base); - /* - * We set these same and is used in pcie rd/wr_other_conf - * functions - */ - pp->va_cfg0_base = pci->dbi_base + SPACE0_REMOTE_CFG_OFFSET; + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "config"); + pp->va_cfg0_base = devm_pci_remap_cfg_resource(dev, res); + if (IS_ERR(pp->va_cfg0_base)) + return PTR_ERR(pp->va_cfg0_base); + pp->va_cfg1_base = pp->va_cfg0_base; - /* Index 1 is the application reg. space address */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "app"); ks_pcie->va_app_base = devm_ioremap_resource(dev, res); if (IS_ERR(ks_pcie->va_app_base)) return PTR_ERR(ks_pcie->va_app_base); -- 2.17.1
