Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758754Ab0APCn3 (ORCPT ); Fri, 15 Jan 2010 21:43:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758397Ab0APCn0 (ORCPT ); Fri, 15 Jan 2010 21:43:26 -0500 Received: from sca-es-mail-1.Sun.COM ([192.18.43.132]:57727 "EHLO sca-es-mail-1.sun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758195Ab0APCnZ (ORCPT ); Fri, 15 Jan 2010 21:43:25 -0500 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: TEXT/PLAIN Date: Fri, 15 Jan 2010 18:41:53 -0800 From: Yinghai Lu Subject: [PATCH 03/11] pci: reject mmio range start from 0 on pci_bridge read In-reply-to: <1263609721-3921-1-git-send-email-yinghai@kernel.org> To: Jesse Barnes , Ingo Molnar , Linus Torvalds , Ivan Kokshaysky , Kenji Kaneshige , Alex Chiang , Bjorn Helgaas Cc: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Yinghai Lu Message-id: <1263609721-3921-4-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.6.4.2 References: <1263609721-3921-1-git-send-email-yinghai@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org that is wrong. exposed by that patch that doesn's shrink pci bridge res. -v2: change to "bar reading" to "reg reading" Signed-off-by: Yinghai Lu --- drivers/pci/probe.c | 18 +++++++++++++++--- 1 files changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 11824d7..70b1f74 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -316,13 +316,17 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child) limit |= (io_limit_hi << 16); } - if (base <= limit) { + if (base <= limit && base) { res->flags = (io_base_lo & PCI_IO_RANGE_TYPE_MASK) | IORESOURCE_IO; if (!res->start) res->start = base; if (!res->end) res->end = limit + 0xfff; dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res); + } else { + dev_printk(KERN_DEBUG, &dev->dev, + " bridge window [io %04lx - %04lx] reg reading\n", + base, limit); } res = child->resource[1]; @@ -330,11 +334,15 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child) pci_read_config_word(dev, PCI_MEMORY_LIMIT, &mem_limit_lo); base = (mem_base_lo & PCI_MEMORY_RANGE_MASK) << 16; limit = (mem_limit_lo & PCI_MEMORY_RANGE_MASK) << 16; - if (base <= limit) { + if (base <= limit && base) { res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM; res->start = base; res->end = limit + 0xfffff; dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res); + } else { + dev_printk(KERN_DEBUG, &dev->dev, + " bridge window [mem 0x%08lx - 0x%08lx] reg reading\n", + base, limit + 0xfffff); } res = child->resource[2]; @@ -366,7 +374,7 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child) #endif } } - if (base <= limit) { + if (base <= limit && base) { res->flags = (mem_base_lo & PCI_PREF_RANGE_TYPE_MASK) | IORESOURCE_MEM | IORESOURCE_PREFETCH; if (res->flags & PCI_PREF_RANGE_TYPE_64) @@ -374,6 +382,10 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child) res->start = base; res->end = limit + 0xfffff; dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res); + } else { + dev_printk(KERN_DEBUG, &dev->dev, + " bridge window [mem 0x%08lx - %08lx pref] reg reading\n", + base, limit + 0xfffff); } } -- 1.6.4.2 -- 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/