[PATCH] pci: Allow very large resource windows

From: Alan
Date: Mon May 19 2014 - 09:03:21 EST


From: Alan <alan@xxxxxxxxxxxxxxx>

This is needed for some of the Xeon Phi type systems.

Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
---
drivers/pci/setup-bus.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index d219d44..4184112 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -921,7 +921,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
{
struct pci_dev *dev;
resource_size_t min_align, align, size, size0, size1;
- resource_size_t aligns[12]; /* Alignments from 1Mb to 2Gb */
+ resource_size_t aligns[14]; /* Alignments from 1Mb to 8Gb */
int order, max_order;
struct resource *b_res = find_free_bus_resource(bus, type);
unsigned int mem64_mask = 0;
@@ -960,7 +960,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
/* For bridges size != alignment */
align = pci_resource_alignment(dev, r);
order = __ffs(align) - 20;
- if (order > 11) {
+ if (order > 13) {
dev_warn(&dev->dev, "disabling BAR %d: %pR "
"(bad alignment %#llx)\n", i, r,
(unsigned long long) align);

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/