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authorBin Meng <bmeng.cn@gmail.com>2015-08-24 01:14:01 -0700
committerSimon Glass <sjg@chromium.org>2015-08-26 07:54:17 -0700
commit1887ed3ad6509a4ce411b7981dd27515e0c44bb7 (patch)
tree4286417dc632afe5eb84acfd7b1c29315804b9ed
parent3242998e24b899540790077f8bbde447f4c039c6 (diff)
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dm: pci: Optimize pci_uclass_post_bind()
If there is no pci device listed in the device tree, don't bother scanning the device tree. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
-rw-r--r--drivers/pci/pci-uclass.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 2d12344..b25298f 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -632,6 +632,13 @@ error:
static int pci_uclass_post_bind(struct udevice *bus)
{
/*
+ * If there is no pci device listed in the device tree,
+ * don't bother scanning the device tree.
+ */
+ if (bus->of_offset == -1)
+ return 0;
+
+ /*
* Scan the device tree for devices. This does not probe the PCI bus,
* as this is not permitted while binding. It just finds devices
* mentioned in the device tree.