PCI: Mark resources as IORESOURCE_UNSET if we can't assign them
When assigning addresses to resources, mark them with IORESOURCE_UNSET
before we start and clear IORESOURCE_UNSET if assignment is successful.
That means that if we print the resource during assignment, we will show
the size, not a meaningless address.
Also, clear IORESOURCE_UNSET if we do assign an address, so we print the
address when it is valid.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 99293fa..dc9ce62 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -4244,6 +4244,7 @@
"Rounding up size of resource #%d to %#llx.\n",
i, (unsigned long long)size);
}
+ r->flags |= IORESOURCE_UNSET;
r->end = size - 1;
r->start = 0;
}
@@ -4257,6 +4258,7 @@
r = &dev->resource[i];
if (!(r->flags & IORESOURCE_MEM))
continue;
+ r->flags |= IORESOURCE_UNSET;
r->end = resource_size(r) - 1;
r->start = 0;
}
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 5cb726c..6e596ab 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -296,6 +296,7 @@
struct resource *r = &dev->resource[0];
if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
+ r->flags |= IORESOURCE_UNSET;
r->start = 0;
r->end = 0x3ffffff;
}
@@ -937,6 +938,8 @@
static void quirk_dunord(struct pci_dev *dev)
{
struct resource *r = &dev->resource [1];
+
+ r->flags |= IORESOURCE_UNSET;
r->start = 0;
r->end = 0xffffff;
}
@@ -1740,6 +1743,7 @@
struct resource *r = &dev->resource[0];
if (r->start & 0x8) {
+ r->flags |= IORESOURCE_UNSET;
r->start = 0;
r->end = 0xf;
}
@@ -1769,6 +1773,7 @@
dev_info(&dev->dev,
"Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
bar);
+ r->flags |= IORESOURCE_UNSET;
r->start = 0;
r->end = 0xff;
}
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index 5d59572..c183945 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -197,8 +197,10 @@
void pci_cleanup_rom(struct pci_dev *pdev)
{
struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
+
if (res->flags & IORESOURCE_ROM_COPY) {
kfree((void*)(unsigned long)res->start);
+ res->flags |= IORESOURCE_UNSET;
res->flags &= ~IORESOURCE_ROM_COPY;
res->start = 0;
res->end = 0;
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 5c060b1..0474b02 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -263,6 +263,7 @@
resource_size_t align, size;
int ret;
+ res->flags |= IORESOURCE_UNSET;
align = pci_resource_alignment(dev, res);
if (!align) {
dev_info(&dev->dev, "BAR %d: can't assign %pR "
@@ -282,6 +283,7 @@
ret = pci_revert_fw_address(res, dev, resno, size);
if (!ret) {
+ res->flags &= ~IORESOURCE_UNSET;
res->flags &= ~IORESOURCE_STARTALIGN;
dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res);
if (resno < PCI_BRIDGE_RESOURCES)
@@ -297,6 +299,7 @@
resource_size_t new_size;
int ret;
+ res->flags |= IORESOURCE_UNSET;
if (!res->parent) {
dev_info(&dev->dev, "BAR %d: can't reassign an unassigned resource %pR "
"\n", resno, res);
@@ -307,6 +310,7 @@
new_size = resource_size(res) + addsize;
ret = _pci_assign_resource(dev, resno, new_size, min_align);
if (!ret) {
+ res->flags &= ~IORESOURCE_UNSET;
res->flags &= ~IORESOURCE_STARTALIGN;
dev_info(&dev->dev, "BAR %d: reassigned %pR\n", resno, res);
if (resno < PCI_BRIDGE_RESOURCES)