From b015b37e6693de515982452eebd6a9d19201f0fe Mon Sep 17 00:00:00 2001 From: Hou Zhiqiang Date: Mon, 28 Aug 2017 18:53:01 +0800 Subject: [PATCH] PCI: artpec6: Stop enabling writes to DBI read-only registers Previously we enabled writes to the DBI read-only registers so the Class Code fix in dw_pcie_setup_rc() would work. But now dw_pcie_setup_rc() enables write permission itself, so we don't need to do it here. Stop enabling writes to the DBI read-only registers. Signed-off-by: Hou Zhiqiang Signed-off-by: Bjorn Helgaas Acked-by: Roy Zang --- drivers/pci/dwc/pcie-artpec6.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/pci/dwc/pcie-artpec6.c b/drivers/pci/dwc/pcie-artpec6.c index 5d81f1d884e3..d153491f600f 100644 --- a/drivers/pci/dwc/pcie-artpec6.c +++ b/drivers/pci/dwc/pcie-artpec6.c @@ -141,12 +141,6 @@ static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie) artpec6_pcie_writel(artpec6_pcie, PCIECFG, val); usleep_range(100, 200); - /* - * Enable writing to config regs. This is required as the Synopsys - * driver changes the class code. That register needs DBI write enable. - */ - dw_pcie_writel_dbi(pci, MISC_CONTROL_1_OFF, DBI_RO_WR_EN); - /* setup root complex */ dw_pcie_setup_rc(pp); -- 2.20.1