From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757533AbdCUOoM (ORCPT ); Tue, 21 Mar 2017 10:44:12 -0400 Received: from bastet.se.axis.com ([195.60.68.11]:47371 "EHLO bastet.se.axis.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757422AbdCUOoJ (ORCPT ); Tue, 21 Mar 2017 10:44:09 -0400 From: Niklas Cassel To: , , , CC: , , , Niklas Cassel Subject: [PATCH] PCI: dwc: fix crash seen due to missing ops Date: Tue, 21 Mar 2017 15:43:54 +0100 Message-ID: <20170321144354.15452-1-niklass@axis.com> X-Mailer: git-send-email 2.11.0 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.0.5.60] X-ClientProxiedBy: XBOX02.axis.com (10.0.5.16) To XBOX02.axis.com (10.0.5.16) X-TM-AS-GCONF: 00 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Niklas Cassel Fix the following crash, seen in dwc/pcie-artpec6. Unable to handle kernel NULL pointer dereference at virtual address 00000004 pgd = c0204000 [00000004] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.11.0-rc3-next-20170321 #1 Hardware name: Axis ARTPEC-6 Platform task: db098000 task.stack: db096000 PC is at dw_pcie_writel_dbi+0x2c/0xd0 ... While at it, fix the same problem for pcie-designware-plat. Fixes: 442ec4c04d12 ("PCI: dwc: all: Split struct pcie_port into host-only and core structures") Signed-off-by: Niklas Cassel --- drivers/pci/dwc/pcie-artpec6.c | 4 ++++ drivers/pci/dwc/pcie-designware-plat.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/drivers/pci/dwc/pcie-artpec6.c b/drivers/pci/dwc/pcie-artpec6.c index fcd3ef845883..6d23683c0892 100644 --- a/drivers/pci/dwc/pcie-artpec6.c +++ b/drivers/pci/dwc/pcie-artpec6.c @@ -234,6 +234,9 @@ static int artpec6_add_pcie_port(struct artpec6_pcie *artpec6_pcie, return 0; } +static const struct dw_pcie_ops dw_pcie_ops = { +}; + static int artpec6_pcie_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -252,6 +255,7 @@ static int artpec6_pcie_probe(struct platform_device *pdev) return -ENOMEM; pci->dev = dev; + pci->ops = &dw_pcie_ops; artpec6_pcie->pci = pci; diff --git a/drivers/pci/dwc/pcie-designware-plat.c b/drivers/pci/dwc/pcie-designware-plat.c index b6c832ba39dd..f20d494922ab 100644 --- a/drivers/pci/dwc/pcie-designware-plat.c +++ b/drivers/pci/dwc/pcie-designware-plat.c @@ -86,6 +86,9 @@ static int dw_plat_add_pcie_port(struct pcie_port *pp, return 0; } +static const struct dw_pcie_ops dw_pcie_ops = { +}; + static int dw_plat_pcie_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -103,6 +106,7 @@ static int dw_plat_pcie_probe(struct platform_device *pdev) return -ENOMEM; pci->dev = dev; + pci->ops = &dw_pcie_ops; dw_plat_pcie->pci = pci; -- 2.11.0