kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

pnp: have quirk_system_pci_resources() include io resources

Browse source 
quirk_system_pci_resources() disables a PnP mem resource that overlaps a
PCI BAR so as to not keep the PCI driver from claiming the resource.  Have
it do the same for io resources.

Here, ACPI claims ports that overlap with my soundcard causing the
soundcard driver to fail to load.  It's unknown why my ACPI BIOS claims
those ports; it did not use to but this is not a (kernel) regression.
Some odd BIOS reconfig triggered by temporarily removing the card seems to
have brought this on.

Signed-off-by: Rene Herman <rene.herman@gmail.com>
Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rene Herman 2008-07-25 19:44:47 -07:00 committed by Linus Torvalds
parent 00412be1d7
commit 999ed65ad1
1 changed files with 8 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/pnp/quirks.c
View file

@ -245,15 +245,17 @@ static void quirk_system_pci_resources(struct pnp_dev *dev)
*/
for_each_pci_dev(pdev) {
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM) ||
pci_resource_len(pdev, i) == 0)
unsigned int type;
type = pci_resource_flags(pdev, i) &
(IORESOURCE_IO | IORESOURCE_MEM);
if (!type || pci_resource_len(pdev, i) == 0)
continue;
pci_start = pci_resource_start(pdev, i);
pci_end = pci_resource_end(pdev, i);
for (j = 0;
(res = pnp_get_resource(dev, IORESOURCE_MEM, j));
j++) {
(res = pnp_get_resource(dev, type, j)); j++) {
if (res->start == 0 && res->end == 0)
continue;
@ -283,9 +285,10 @@ static void quirk_system_pci_resources(struct pnp_dev *dev)
* the PCI region, and that might prevent a PCI
* driver from requesting its resources.
*/
dev_warn(&dev->dev, "mem resource "
dev_warn(&dev->dev, "%s resource "
"(0x%llx-0x%llx) overlaps %s BAR %d "
"(0x%llx-0x%llx), disabling\n",
pnp_resource_type_name(res),
(unsigned long long) pnp_start,
(unsigned long long) pnp_end,
pci_name(pdev), i,