PCI: designware: Fix RC BAR to be single 64-bit non-prefetchable memory BAR

The Synopsys PCIe core provides one pair of 32-bit BARs (BAR 0 and BAR 1).
The BARs can be configured as follows:

  - One 64-bit BAR: BARs 0 and 1 are combined to form a single 64-bit BAR
  - Two 32-bit BARs: BARs 0 and 1 are two independent 32-bit BARs

This patch corrects 64-bit, non-prefetchable memory BAR configuration
implemented in dw driver.

Signed-off-by: Mohit Kumar <mohit.kumar@st.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Pratyush Anand <pratyush.anand@st.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org	# v3.12+

diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 17ce88f79d2b1ed3bbd351726f9d0af68be7d9ba..6d23d8c893cd09f016656a9dc57b2eb1c91a662a 100644 (file)
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -800,7 +800,7 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
 
        /* setup RC BARs */
        dw_pcie_writel_rc(pp, 0x00000004, PCI_BASE_ADDRESS_0);
-       dw_pcie_writel_rc(pp, 0x00000004, PCI_BASE_ADDRESS_1);
+       dw_pcie_writel_rc(pp, 0x00000000, PCI_BASE_ADDRESS_1);
 
        /* setup interrupt pins */
        dw_pcie_readl_rc(pp, PCI_INTERRUPT_LINE, &val);