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authorDavid Vrabel <david.vrabel@csr.com>2008-04-08 13:24:46 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-24 21:16:59 -0700
commit4953d141dc5db748475001cfbfdcc42e66cf900e (patch)
treed05465dd6ca1fa1fb3e271f436a85f0f0b2cf978
parentfc721f5194dc98c8108fb155a4fbae1cd746cf41 (diff)
usb: don't update devnum for wusb devices
For WUSB devices, usb_dev.devnum is a device index and not the real device address (which is managed by wusbcore). Therefore, only set devnum once (in choose_address()) and never change it. Signed-off-by: David Vrabel <david.vrabel@csr.com> Cc: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/core/hub.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 830c851384b..eb57fcc701d 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1245,6 +1245,13 @@ static void release_address(struct usb_device *udev)
}
}
+static void update_address(struct usb_device *udev, int devnum)
+{
+ /* The address for a WUSB device is managed by wusbcore. */
+ if (!udev->wusb)
+ udev->devnum = devnum;
+}
+
#ifdef CONFIG_USB_SUSPEND
static void usb_stop_pm(struct usb_device *udev)
@@ -1733,7 +1740,7 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
case 0:
/* TRSTRCY = 10 ms; plus some extra */
msleep(10 + 40);
- udev->devnum = 0; /* Device now at address 0 */
+ update_address(udev, 0);
/* FALL THROUGH */
case -ENOTCONN:
case -ENODEV:
@@ -2236,7 +2243,8 @@ static int hub_set_address(struct usb_device *udev, int devnum)
USB_REQ_SET_ADDRESS, 0, devnum, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT);
if (retval == 0) {
- udev->devnum = devnum; /* Device now using proper address */
+ /* Device now using proper address. */
+ update_address(udev, devnum);
usb_set_device_state(udev, USB_STATE_ADDRESS);
usb_ep0_reinit(udev);
}
@@ -2491,7 +2499,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
fail:
if (retval) {
hub_port_disable(hub, port1, 0);
- udev->devnum = devnum; /* for disconnect processing */
+ update_address(udev, devnum); /* for disconnect processing */
}
mutex_unlock(&usb_address0_mutex);
return retval;