diff options
| author | David Vrabel <david.vrabel@csr.com> | 2009-01-06 17:58:02 +0000 |
|---|---|---|
| committer | David Vrabel <david.vrabel@csr.com> | 2009-01-06 17:58:02 +0000 |
| commit | 9a9b1d17ba59b78e4bae67f7a7cf546986a42e7d (patch) | |
| tree | 319ec314e8b92788ab98bacd66f028b961210ece /drivers/usb/wusbcore/rh.c | |
| parent | 2226b1c219a18804bc40e32a5d53c287a6c925d9 (diff) | |
wusb: return -ENOTCONN when resetting a port with no connected device
If reading the device descriptor fails during hub_port_init() fails,
then the port is disabled, disconnecting the device. The port is then
reset at the start of the next init attempt but there is no device to
reset.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Diffstat (limited to 'drivers/usb/wusbcore/rh.c')
| -rw-r--r-- | drivers/usb/wusbcore/rh.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/wusbcore/rh.c b/drivers/usb/wusbcore/rh.c index 95c6fa3bf6b..407a9fcc89c 100644 --- a/drivers/usb/wusbcore/rh.c +++ b/drivers/usb/wusbcore/rh.c @@ -100,6 +100,9 @@ static int wusbhc_rh_port_reset(struct wusbhc *wusbhc, u8 port_idx) struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx); struct wusb_dev *wusb_dev = port->wusb_dev; + if (wusb_dev == NULL) + return -ENOTCONN; + port->status |= USB_PORT_STAT_RESET; port->change |= USB_PORT_STAT_C_RESET; |