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authorDan Williams <dan.j.williams@intel.com>2014-06-05 14:23:04 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-17 16:44:57 -0700
commite3d9558082061481af96b588583e0cf220c2943c (patch)
tree07a23191fcf8a7adc7134a64553149436190c600 /drivers/usb/core
parent7171511eaec5bf23fb06078f59784a3a0626b38f (diff)
downloadlinux-stericsson-e3d9558082061481af96b588583e0cf220c2943c.tar.gz
usb: fix ->update_hub_device() vs hdev->maxchild
Commit d8521afe3586 "usb: assign default peer ports for root hubs" delayed marking a hub valid (set hdev->maxchild) until it had been fully configured and to enable the publishing of valid hubs to be serialized by usb_port_peer_mutex. However, xhci_update_hub_device() in some cases depends on hdev->maxchild already being set. Do the minimal fix and move it after the setting of hdev->maxchild. Cc: Mathias Nyman <mathias.nyman@linux.intel.com> Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Tested-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core')
-rw-r--r--drivers/usb/core/hub.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 879b66e13370..ec6f05cbbae3 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1526,18 +1526,6 @@ static int hub_configure(struct usb_hub *hub,
dev_dbg(hub_dev, "%umA bus power budget for each child\n",
hub->mA_per_port);
- /* Update the HCD's internal representation of this hub before khubd
- * starts getting port status changes for devices under the hub.
- */
- if (hcd->driver->update_hub_device) {
- ret = hcd->driver->update_hub_device(hcd, hdev,
- &hub->tt, GFP_KERNEL);
- if (ret < 0) {
- message = "can't update HCD hub info";
- goto fail;
- }
- }
-
ret = hub_hub_status(hub, &hubstatus, &hubchange);
if (ret < 0) {
message = "can't get hub status";
@@ -1593,6 +1581,18 @@ static int hub_configure(struct usb_hub *hub,
if (ret < 0)
goto fail;
+ /* Update the HCD's internal representation of this hub before khubd
+ * starts getting port status changes for devices under the hub.
+ */
+ if (hcd->driver->update_hub_device) {
+ ret = hcd->driver->update_hub_device(hcd, hdev,
+ &hub->tt, GFP_KERNEL);
+ if (ret < 0) {
+ message = "can't update HCD hub info";
+ goto fail;
+ }
+ }
+
usb_hub_adjust_deviceremovable(hdev, hub->descriptor);
hub_activate(hub, HUB_INIT);