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authorSascha Hauer <s.hauer@pengutronix.de>2014-07-10 15:17:50 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2014-07-18 14:50:21 +0200
commitc7d3ec47f9699bb210799593ebb277168259b8c5 (patch)
tree61928cf9e69991c441d5559334dedf56a7dea1d5
parent9d5b3cbe511ec68c92b38307603490ef303ec4f8 (diff)
downloadbarebox-c7d3ec47f9699bb210799593ebb277168259b8c5.tar.gz
USB: host: hub: only configure hub once
We had a single function which configures the hub and scans the ports. Split this up and configure the hub only once and scan the ports during detect() time. This allows to plug in additional devices into a hub while continuing to use the already existing devices. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--drivers/usb/core/hub.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 689a79c..39cadb5 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -405,6 +405,13 @@ static int usb_hub_configure(struct usb_device *dev)
"" : "no ");
usb_hub_power_on(hub);
+ return 0;
+}
+
+static int usb_hub_configure_ports(struct usb_device *dev)
+{
+ int i;
+
for (i = 0; i < dev->maxchild; i++)
usb_hub_configure_port(dev, i);
@@ -416,7 +423,7 @@ static int usb_hub_detect(struct device_d *dev)
struct usb_device *usbdev = container_of(dev, struct usb_device, dev);
int i;
- usb_hub_configure(usbdev);
+ usb_hub_configure_ports(usbdev);
for (i = 0; i < usbdev->maxchild; i++) {
if (usbdev->children[i])