Allocate resources to cardbus bridge only after all other genuine
resources requests are satisfied. Dont retry if resource allocation
for cardbus-bridge fails.
Tested-by: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
Signed-off-by: Ram Pai <linuxram@xxxxxxxxxx>
---
drivers/pci/setup-bus.c | 20 +++++++++++++-------
1 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 4f8873e..023fc9c 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -742,7 +742,8 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
return 1;
}
-static void pci_bus_size_cardbus(struct pci_bus *bus)
+static void pci_bus_size_cardbus(struct pci_bus *bus,
+ struct resource_list_x *add_head)
{
struct pci_dev *bridge = bus->self;
struct resource *b_res = &bridge->resource[PCI_BRIDGE_RESOURCES];
@@ -753,12 +754,14 @@ static void pci_bus_size_cardbus(struct pci_bus *bus)
* a fixed amount of bus space for CardBus bridges.
*/
b_res[0].start = 0;
- b_res[0].end = pci_cardbus_io_size - 1;
+ b_res[0].end = 0;
b_res[0].flags |= IORESOURCE_IO | IORESOURCE_SIZEALIGN;
+ add_to_list(add_head, bridge, b_res, pci_cardbus_io_size - 1, 1);
b_res[1].start = 0;
- b_res[1].end = pci_cardbus_io_size - 1;
+ b_res[1].end = 0;
b_res[1].flags |= IORESOURCE_IO | IORESOURCE_SIZEALIGN;
+ add_to_list(add_head, bridge, b_res+1, pci_cardbus_io_size - 1, 1);
/*
* Check whether prefetchable memory is supported
@@ -778,16 +781,19 @@ static void pci_bus_size_cardbus(struct pci_bus *bus)
*/
if (ctrl & PCI_CB_BRIDGE_CTL_PREFETCH_MEM0) {
b_res[2].start = 0;
- b_res[2].end = pci_cardbus_mem_size - 1;
+ b_res[2].end = 0;
b_res[2].flags |= IORESOURCE_MEM | IORESOURCE_PREFETCH | IORESOURCE_SIZEALIGN;
+ add_to_list(add_head, bridge, b_res+2, pci_cardbus_mem_size - 1, 1);
b_res[3].start = 0;
- b_res[3].end = pci_cardbus_mem_size - 1;
+ b_res[3].end = 0;
b_res[3].flags |= IORESOURCE_MEM | IORESOURCE_SIZEALIGN;
+ add_to_list(add_head, bridge, b_res+3, pci_cardbus_mem_size - 1, 1);
} else {
b_res[3].start = 0;
- b_res[3].end = pci_cardbus_mem_size * 2 - 1;
+ b_res[3].end = 0;
b_res[3].flags |= IORESOURCE_MEM | IORESOURCE_SIZEALIGN;
+ add_to_list(add_head, bridge, b_res+3, pci_cardbus_mem_size * 2 - 1, 1);
}
}
@@ -805,7 +811,7 @@ void __ref __pci_bus_size_bridges(struct pci_bus *bus,
switch (dev->class >> 8) {
case PCI_CLASS_BRIDGE_CARDBUS:
- pci_bus_size_cardbus(b);
+ pci_bus_size_cardbus(b, add_head);
break;
case PCI_CLASS_BRIDGE_PCI:
--
1.7.0.4
--
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