diff options
| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2010-02-24 20:31:04 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2010-02-24 20:33:45 +0100 |
| commit | 109d28152b6e9d5de64cd23e3bc08885ccb3d1ef (patch) | |
| tree | b7b8863faa05254781acfb85cc41da3eef467c6b /drivers/usb/core/hcd.c | |
| parent | 168cf9af699e87d5a6f44b684583714ecabb8e71 (diff) | |
| parent | 60b341b778cc2929df16c0a504c91621b3c6a4ad (diff) | |
Merge tag 'v2.6.33' for its firewire changes since last branch point
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 0495fa65122..80995ef0868 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1684,6 +1684,24 @@ int usb_hcd_alloc_bandwidth(struct usb_device *udev, } } if (cur_alt && new_alt) { + struct usb_interface *iface = usb_ifnum_to_if(udev, + cur_alt->desc.bInterfaceNumber); + + if (iface->resetting_device) { + /* + * The USB core just reset the device, so the xHCI host + * and the device will think alt setting 0 is installed. + * However, the USB core will pass in the alternate + * setting installed before the reset as cur_alt. Dig + * out the alternate setting 0 structure, or the first + * alternate setting if a broken device doesn't have alt + * setting 0. + */ + cur_alt = usb_altnum_to_altsetting(iface, 0); + if (!cur_alt) + cur_alt = &iface->altsetting[0]; + } + /* Drop all the endpoints in the current alt setting */ for (i = 0; i < cur_alt->desc.bNumEndpoints; i++) { ret = hcd->driver->drop_endpoint(hcd, udev, |