diff options
Diffstat (limited to 'drivers/usb/wusbcore')
| -rw-r--r-- | drivers/usb/wusbcore/devconnect.c | 21 | ||||
| -rw-r--r-- | drivers/usb/wusbcore/wusbhc.c | 32 |
2 files changed, 31 insertions, 22 deletions
diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c index 386eaa22d21..4ac4300a3f9 100644 --- a/drivers/usb/wusbcore/devconnect.c +++ b/drivers/usb/wusbcore/devconnect.c @@ -267,6 +267,8 @@ static void wusbhc_devconnect_acked_work(struct work_struct *work) mutex_lock(&wusbhc->mutex); wusbhc_devconnect_acked(wusbhc, wusb_dev); mutex_unlock(&wusbhc->mutex); + + wusb_dev_put(wusb_dev); } /* @@ -396,7 +398,8 @@ static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc, /* After a device disconnects, change the GTK (see [WUSB] * section 6.2.11.2). */ - wusbhc_gtk_rekey(wusbhc); + if (wusbhc->active) + wusbhc_gtk_rekey(wusbhc); /* The Wireless USB part has forgotten about the device already; now * khubd's timer will pick up the disconnection and remove the USB @@ -1084,15 +1087,21 @@ error_mmcie_set: * wusbhc_devconnect_stop - stop managing connected devices * @wusbhc: the WUSB HC * - * Removes the Host Info IE and stops the keep alives. - * - * FIXME: should this disconnect all devices? + * Disconnects any devices still connected, stops the keep alives and + * removes the Host Info IE. */ void wusbhc_devconnect_stop(struct wusbhc *wusbhc) { - cancel_delayed_work_sync(&wusbhc->keep_alive_timer); - WARN_ON(!list_empty(&wusbhc->cack_list)); + int i; + mutex_lock(&wusbhc->mutex); + for (i = 0; i < wusbhc->ports_max; i++) { + if (wusbhc->port[i].wusb_dev) + __wusbhc_dev_disconnect(wusbhc, &wusbhc->port[i]); + } + mutex_unlock(&wusbhc->mutex); + + cancel_delayed_work_sync(&wusbhc->keep_alive_timer); wusbhc_mmcie_rm(wusbhc, &wusbhc->wuie_host_info->hdr); kfree(wusbhc->wuie_host_info); wusbhc->wuie_host_info = NULL; diff --git a/drivers/usb/wusbcore/wusbhc.c b/drivers/usb/wusbcore/wusbhc.c index 07c63a31c79..ee6256f2363 100644 --- a/drivers/usb/wusbcore/wusbhc.c +++ b/drivers/usb/wusbcore/wusbhc.c @@ -88,33 +88,31 @@ static DEVICE_ATTR(wusb_trust_timeout, 0644, wusb_trust_timeout_show, wusb_trust_timeout_store); /* - * Show & store the current WUSB CHID + * Show the current WUSB CHID. */ static ssize_t wusb_chid_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + const struct wusb_ckhdid *chid; ssize_t result = 0; if (wusbhc->wuie_host_info != NULL) - result += ckhdid_printf(buf, PAGE_SIZE, - &wusbhc->wuie_host_info->CHID); + chid = &wusbhc->wuie_host_info->CHID; + else + chid = &wusb_ckhdid_zero; + + result += ckhdid_printf(buf, PAGE_SIZE, chid); + result += sprintf(buf + result, "\n"); + return result; } /* - * Store a new CHID - * - * This will (FIXME) trigger many changes. - * - * - Send an all zeros CHID and it will stop the controller - * - Send a non-zero CHID and it will start it - * (unless it was started, it will just change the CHID, - * diconnecting all devices first). + * Store a new CHID. * - * So first we scan the MMC we are sent and then we act on it. We - * read it in the same format as we print it, an ASCII string of 16 - * hex bytes. + * - Write an all zeros CHID and it will stop the controller + * - Write a non-zero CHID and it will start it. * * See wusbhc_chid_set() for more info. */ @@ -339,13 +337,15 @@ void wusbhc_giveback_urb(struct wusbhc *wusbhc, struct urb *urb, int status) { struct wusb_dev *wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, urb->dev); - if (status == 0) { + if (status == 0 && wusb_dev) { wusb_dev->entry_ts = jiffies; - /* wusbhc_devconnect_acked() can't be called from from + /* wusbhc_devconnect_acked() can't be called from atomic context so defer it to a work queue. */ if (!list_empty(&wusb_dev->cack_node)) queue_work(wusbd, &wusb_dev->devconnect_acked_work); + else + wusb_dev_put(wusb_dev); } usb_hcd_giveback_urb(&wusbhc->usb_hcd, urb, status); |