diff mbox

[v7,37/60] PCI: Check if resource is allocated before trying to assign one

Message ID 1444340359-8011-38-git-send-email-yinghai@kernel.org
State Superseded
Headers show

Commit Message

Yinghai Lu Oct. 8, 2015, 9:38 p.m. UTC 
In following alt_size support, we will call pci_assign_resource() several
times on one resource list, and some resources could have been assigned
already.

Skip allocated resource in the list, as pci_assign_resource()
only can handle not assigned resource.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
 drivers/pci/setup-bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index deed016..ca34346 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -386,7 +386,7 @@  static void assign_requested_resources_sorted(struct list_head *head,
 	list_for_each_entry(dev_res, head, list) {
 		res = dev_res->res;
 		idx = res - &dev_res->dev->resource[0];
-		if (resource_size(res) &&
+		if (!res->parent && resource_size(res) &&
 		    pci_assign_resource(dev_res->dev, idx)) {
 			if (fail_head)
 				add_to_list(fail_head, dev_res->dev, res);