Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752902Ab1DEHDM (ORCPT ); Tue, 5 Apr 2011 03:03:12 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:48271 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752077Ab1DEHDJ (ORCPT ); Tue, 5 Apr 2011 03:03:09 -0400 From: Hemant Pedanekar To: jbarnes@virtuousgeek.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-omap@vger.kernel.org, Hemant Pedanekar Subject: [PATCH] pci: Add quirk for setting valid class for TI816X Endpoint Date: Tue, 5 Apr 2011 12:32:50 +0530 Message-Id: <1301986970-16482-1-git-send-email-hemantp@ti.com> X-Mailer: git-send-email 1.7.3.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1750 Lines: 46 TI816X (common name for DM816x/C6A816x/AM389x family) devices configured to boot as PCIe Endpoint have class code = 0. This makes kernel PCI bus code to skip allocating BARs to these devices resulting into following type of error when trying to enable them: "Device 0000:01:00.0 not available because of resource collisions" The device cannot be operated because of the above issue. This patch adds a ID specific (TI VENDOR ID and 816X DEVICE ID based) 'early' fixup quirk to replace class code with PCI_CLASS_MULTIMEDIA_VIDEO as class. Signed-off-by: Hemant Pedanekar --- drivers/pci/quirks.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index bd80f63..a1e4f61 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2784,6 +2784,16 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors); #endif +static void __devinit fixup_ti816x_class(struct pci_dev* dev) +{ + /* TI 816x devices do not have class code set when in PCIe boot mode */ + if (dev->class == PCI_CLASS_NOT_DEFINED) { + dev_info(&dev->dev, "Setting PCI class for 816x PCIe device\n"); + dev->class = PCI_CLASS_MULTIMEDIA_VIDEO; + } +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_TI, 0xb800, fixup_ti816x_class); + static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end) { -- 1.7.3.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/