From: Dominik Brodowski If the CardBus windows were pre-configured and the CardBus bridge is behind a transparent PCI-PCI bridge, pci_find_parent_resource() might return a different resource than the real parent if it is called before the window is determined. Therefore, move that call around. Also fix return of value in void function. Signed-off-by: Dominik Brodowski Signed-off-by: Andrew Morton --- drivers/pcmcia/yenta_socket.c | 20 +++++++++----------- 1 files changed, 9 insertions(+), 11 deletions(-) diff -puN drivers/pcmcia/yenta_socket.c~yenta-fix-parent-resource-determination drivers/pcmcia/yenta_socket.c --- 25/drivers/pcmcia/yenta_socket.c~yenta-fix-parent-resource-determination Mon Jul 11 17:25:43 2005 +++ 25-akpm/drivers/pcmcia/yenta_socket.c Mon Jul 11 17:25:43 2005 @@ -615,7 +615,7 @@ static void yenta_allocate_res(struct ye res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr; /* Already allocated? */ if (res->parent) - return 0; + return; /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */ mask = ~0xfff; @@ -626,25 +626,23 @@ static void yenta_allocate_res(struct ye bus = socket->dev->subordinate; res->name = bus->name; res->flags = type; - res->start = 0; - res->end = 0; - root = pci_find_parent_resource(socket->dev, res); - - if (!root) - return; start = config_readl(socket, offset) & mask; end = config_readl(socket, offset+4) | ~mask; if (start && end > start && !override_bios) { res->start = start; res->end = end; - if (request_resource(root, res) == 0) + root = pci_find_parent_resource(socket->dev, res); + if (root && (request_resource(root, res) == 0)) return; - printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n", + printk(KERN_INFO "yenta %s: Preassigned resource %d busy or not available, reconfiguring...\n", pci_name(socket->dev), nr); - res->start = res->end = 0; } + res->start = 0; + res->end = 0; + root = pci_find_parent_resource(socket->dev, res); + if (type & IORESOURCE_IO) { align = 1024; size = BRIDGE_IO_MAX; @@ -693,7 +691,7 @@ static void yenta_allocate_resources(str yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH); yenta_allocate_res(socket, 1, IORESOURCE_MEM); yenta_allocate_res(socket, 2, IORESOURCE_IO); - yenta_allocate_res(socket, 3, IORESOURCE_IO); /* PCI isn't clever enough to use this one yet */ + yenta_allocate_res(socket, 3, IORESOURCE_IO); } _