Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751490AbaFDTR5 (ORCPT ); Wed, 4 Jun 2014 15:17:57 -0400 Received: from hqemgate16.nvidia.com ([216.228.121.65]:10003 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751010AbaFDTR4 (ORCPT ); Wed, 4 Jun 2014 15:17:56 -0400 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Wed, 04 Jun 2014 12:10:00 -0700 From: Vidya Sagar To: , , , , , , , , CC: , , Subject: [PATCH] ARM: fix debug prints relevant to PCI devices Date: Thu, 5 Jun 2014 00:47:27 +0530 Message-ID: <1401909447-8434-1-git-send-email-vidyas@nvidia.com> X-Mailer: git-send-email 1.8.1.5 X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As per PCIe spec, fast back-to-back transactions feature is not applicable to PCIe devices. Hence, do not print that fast back-to-back trasactions are disabled when there is a PCIe device found on the bus Signed-off-by: Vidya Sagar --- arch/arm/kernel/bios32.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c index 17a26c1..95ad3fb 100644 --- a/arch/arm/kernel/bios32.c +++ b/arch/arm/kernel/bios32.c @@ -290,6 +290,7 @@ void pcibios_fixup_bus(struct pci_bus *bus) { struct pci_dev *dev; u16 features = PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_FAST_BACK; + int has_pcie_dev = 0; /* * Walk the devices on this bus, working out what we can @@ -298,6 +299,8 @@ void pcibios_fixup_bus(struct pci_bus *bus) list_for_each_entry(dev, &bus->devices, bus_list) { u16 status; + if (!has_pcie_dev) + has_pcie_dev = pci_pcie_cap(dev); pci_read_config_word(dev, PCI_STATUS, &status); /* @@ -354,9 +357,11 @@ void pcibios_fixup_bus(struct pci_bus *bus) /* * Report what we did for this bus + * (only if the bus doesn't have even one PCIe device) */ - printk(KERN_INFO "PCI: bus%d: Fast back to back transfers %sabled\n", - bus->number, (features & PCI_COMMAND_FAST_BACK) ? "en" : "dis"); + if (!has_pcie_dev) + printk(KERN_INFO "PCI: bus%d: Fast back to back transfers %sabled\n", + bus->number, (features & PCI_COMMAND_FAST_BACK) ? "en" : "dis"); } EXPORT_SYMBOL(pcibios_fixup_bus); -- 1.8.1.5 -- 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/