openwrtv3/target/linux/mvebu/patches-3.10/0048-PCI-mvebu-Check-valid-base-address-before-port-setup.patch
Luka Perkov 69d323f231 mvebu: backport mainline patches from kernel 3.11
This is a backport of the patches accepted to the Linux mainline related to
mvebu SoC (Armada XP and Armada 370) between Linux v3.10, and Linux v3.11.
This work mainly covers:

* Enabling USB storage, and PCI to mvebu_defconfig.
* Add support for NOR flash.
* Some PCI device tree related updates, and bus parsing.
* Adding Armada XP & 370 PCI driver, and update some clock gating
  specifics.
* Introduce Marvell EBU Device Bus driver.
* Enaling USB in the armada*.dts.
* Enabling, and updating the mvebu-mbus.
* Some SATA and Ethernet related fixes.

Signed-off-by: Seif Mazareeb <seif.mazareeb@gmail.com>
CC: Luka Perkov <luka@openwrt.org>

SVN-Revision: 39564
2014-02-11 02:07:38 +00:00

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Diff

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