From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Keith Busch To: LKML , x86@kernel.org, linux-pci@vger.kernel.org Cc: Jiang Liu , Thomas Gleixner , Dan Williams , Bjorn Helgaas , Bryan Veal , Ingo Molnar , "H. Peter Anvin" , Martin Mares , Jon Derrick , Keith Busch Subject: [RFC PATCHv3 1/4] pci: skip child bus with conflicting resources Date: Tue, 27 Oct 2015 11:34:04 -0600 Message-Id: <1445967247-24310-2-git-send-email-keith.busch@intel.com> In-Reply-To: <1445967247-24310-1-git-send-email-keith.busch@intel.com> References: <1445967247-24310-1-git-send-email-keith.busch@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: And use the max bus resource from the parent rather than assume 255. Signed-off-by: Keith Busch --- drivers/pci/probe.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 8361d27..1cb3be7 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -856,7 +856,10 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, int pass) if (!child) goto out; child->primary = primary; - pci_bus_insert_busn_res(child, secondary, subordinate); + if (!pci_bus_insert_busn_res(child, secondary, subordinate)) { + pci_remove_bus(child); + goto out; + } child->bridge_ctl = bctl; } @@ -896,7 +899,10 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, int pass) child = pci_add_new_bus(bus, dev, max+1); if (!child) goto out; - pci_bus_insert_busn_res(child, max+1, 0xff); + if (!pci_bus_insert_busn_res(child, max+1, bus->busn_res.end)) { + pci_remove_bus(child); + goto out; + } } max++; buses = (buses & 0xff000000) -- 1.7.10.4