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| 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 | |
| parent | 2226b1c219a18804bc40e32a5d53c287a6c925d9 (diff) | |
| download | op-kernel-dev-9a9b1d17ba59b78e4bae67f7a7cf546986a42e7d.zip op-kernel-dev-9a9b1d17ba59b78e4bae67f7a7cf546986a42e7d.tar.gz | |
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')
| -rw-r--r-- | drivers/usb/wusbcore/devconnect.c | 1 | ||||
| -rw-r--r-- | drivers/usb/wusbcore/rh.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c index e2e7e4b..8e18141 100644 --- a/drivers/usb/wusbcore/devconnect.c +++ b/drivers/usb/wusbcore/devconnect.c @@ -386,6 +386,7 @@ static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc, | USB_PORT_STAT_LOW_SPEED | USB_PORT_STAT_HIGH_SPEED); port->change |= USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE; if (wusb_dev) { + dev_dbg(wusbhc->dev, "disconnecting device from port %d\n", wusb_dev->port_idx); if (!list_empty(&wusb_dev->cack_node)) list_del_init(&wusb_dev->cack_node); /* For the one in cack_add() */ diff --git a/drivers/usb/wusbcore/rh.c b/drivers/usb/wusbcore/rh.c index 95c6fa3..407a9fc 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; |
