[PATCH] pci: yenta cardbus fix
On Mon, Jun 20, 2005 at 07:15:34PM +1000, Grant Coady wrote:
> Yenta: CardBus bridge found at 0000:00:0b.0 [1179:0001]
> yenta 0000:00:0b.0: Preassigned resource 0 busy, reconfiguring...
In -mm1 the cardbus resources might be assigned in
pci_assign_unassigned_resources() pass. From your dmesg:
PCI: Bus 2, cardbus bridge: 0000:00:0b.0
IO window: 00002000-00002fff
IO window: 00003000-00003fff
PREFETCH window: 12000000-13ffffff
MEM window: 14000000-15ffffff
Then yenta_allocate_res() tries to assign these resources again and,
naturally, fails.
This adds check for already assigned cardbus resources.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index bee0536..02b23ab 100644
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -549,6 +549,11 @@
unsigned offset;
unsigned mask;
+ res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
+ /* Already allocated? */
+ if (res->parent)
+ return 0;
+
/* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
mask = ~0xfff;
if (type & IORESOURCE_IO)
@@ -556,7 +561,6 @@
offset = 0x1c + 8*nr;
bus = socket->dev->subordinate;
- res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
res->name = bus->name;
res->flags = type;
res->start = 0;
