target/linux/mvebu/patches-3.10/0048-PCI-mvebu-Check-valid-base-address-before-port-setup.patch

   1 From 3dc077a80c71050e198e7884707ece042443fe3c Mon Sep 17 00:00:00 2001
   2 From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
   3 Date: Tue, 23 Jul 2013 07:36:00 -0300
   4 Subject: [PATCH 048/203] PCI: mvebu: Check valid base address before port
   5  setup
   6
   7 This driver does not fail to probe when it cannot obtain
   8 a port base address. Therefore, add a check for NULL base address
   9 before setting up the port, which prevents a kernel panic in such
  10 cases.
  11
  12 Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
  13 Tested-by: Andrew Lunn <andrew@lunn.ch>
  14 Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
  15 ---
  16  drivers/pci/host/pci-mvebu.c | 2 ++
  17  1 file changed, 2 insertions(+)
  18
  19 --- a/drivers/pci/host/pci-mvebu.c
  20 +++ b/drivers/pci/host/pci-mvebu.c
  21 @@ -637,6 +637,8 @@ static int __init mvebu_pcie_setup(int n
  22
  23         for (i = 0; i < pcie->nports; i++) {
  24                 struct mvebu_pcie_port *port = &pcie->ports[i];
  25 +               if (!port->base)
  26 +                       continue;
  27                 mvebu_pcie_setup_hw(port);
  28         }
  29