diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2015-01-15 16:21:51 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-01-16 10:04:43 -0600 |
| commit | d63e2e1f3df904bf6bd150bdafb42ddbb3257ea8 (patch) | |
| tree | 728125b20a6123be5f395940ecf74846b7bc7b13 /arch/sparc | |
| parent | 3ebfe46ac72c0bda0fee3d33dd4cfe88f43cefd9 (diff) | |
sparc/PCI: Clip bridge windows to fit in upstream windows
Every PCI-PCI bridge window should fit inside an upstream bridge window
because orphaned address space is unreachable from the primary side of the
upstream bridge. If we inherit invalid bridge windows that overlap an
upstream window from firmware, clip them to fit and update the bridge
accordingly.
[bhelgaas: changelog]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=85491
Reported-by: Marek Kordik <kordikmarek@gmail.com>
Fixes: 5b28541552ef ("PCI: Restrict 64-bit prefetchable bridge windows to 64-bit resources")
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: David S. Miller <davem@davemloft.net>
CC: Paul Gortmaker <paul.gortmaker@windriver.com>
CC: Yijing Wang <wangyijing@huawei.com>
CC: Sam Ravnborg <sam@ravnborg.org>
CC: sparclinux@vger.kernel.org
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/kernel/pci.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index b36365f49478..9ce5afe167ff 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -639,7 +639,10 @@ static void pci_claim_bus_resources(struct pci_bus *bus) (unsigned long long)r->end, (unsigned int)r->flags); - pci_claim_resource(dev, i); + if (pci_claim_resource(dev, i) == 0) + continue; + + pci_claim_bridge_resource(dev, i); } } |