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authorBjorn Helgaas <bjorn.helgaas@hp.com>2010-05-03 20:47:21 +0400
committerLen Brown <len.brown@intel.com>2010-05-06 10:08:47 +0400
commit11439a6fd90b4861df64b4f983726e1c54977ab7 (patch)
treec8f27af40cb95435551e14f4ff4ad32c2a12c91b /drivers/pnp
parent722154e4cacf015161efe60009ae9be23d492296 (diff)
downloadlinux-11439a6fd90b4861df64b4f983726e1c54977ab7.tar.xz
PNP: don't check for conflicts with bridge windows
With fa35b4926, I broke a lot of PNP resource assignment. That commit made PNPACPI include bridge windows as PNP resources, and PNP resource assignment treats any enabled overlapping PNP resources as conflicts. Since PCI host bridge windows typically include most of the I/O port space, this makes PNP port assigments fail. The PCI host bridge driver will eventually use those PNP window resources, so we should make PNP ignore them when checking for conflicts. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=15903 Reported-and-tested-by: Pavel Kysilka <goldenfish@linuxsoft.cz> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pnp')
-rw-r--r--drivers/pnp/resource.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index 2e54e6a23c72..e3446ab8b563 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -211,6 +211,8 @@ int pnp_check_port(struct pnp_dev *dev, struct resource *res)
if (tres->flags & IORESOURCE_IO) {
if (cannot_compare(tres->flags))
continue;
+ if (tres->flags & IORESOURCE_WINDOW)
+ continue;
tport = &tres->start;
tend = &tres->end;
if (ranged_conflict(port, end, tport, tend))
@@ -271,6 +273,8 @@ int pnp_check_mem(struct pnp_dev *dev, struct resource *res)
if (tres->flags & IORESOURCE_MEM) {
if (cannot_compare(tres->flags))
continue;
+ if (tres->flags & IORESOURCE_WINDOW)
+ continue;
taddr = &tres->start;
tend = &tres->end;
if (ranged_conflict(addr, end, taddr, tend))