diff options
| author | Alex Shi <alex.shi@linaro.org> | 2014-07-29 13:10:31 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2014-07-29 13:10:31 +0800 |
| commit | a21b99aadbb2cc3504c767a6cfd9cb5a0c5b65ed (patch) | |
| tree | f7655133751311829ce00fcaa05905be01a0073e /drivers/usb | |
| parent | 6a87ef22a8b54095478561f9f2664c40c5c76d98 (diff) | |
| parent | 2517325cd75273dc472cf7fa17617df945cf423d (diff) | |
Merge branch 'linux-linaro-lsk-v3.14' into linux-linaro-lsk-v3.14-android
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 4 | ||||
| -rw-r--r-- | drivers/usb/core/hub.c | 19 |
2 files changed, 21 insertions, 2 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 3314516018c6..86b1fd673749 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1179,8 +1179,8 @@ static int ep_enable(struct usb_ep *ep, if (hwep->type == USB_ENDPOINT_XFER_CONTROL) cap |= QH_IOS; - if (hwep->num) - cap |= QH_ZLT; + + cap |= QH_ZLT; cap |= (hwep->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT; /* * For ISO-TX, we set mult at QH as the largest value, and use diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 3baa51bf8a6a..36b1e856bd00 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -884,6 +884,25 @@ static int hub_usb3_port_disable(struct usb_hub *hub, int port1) if (!hub_is_superspeed(hub->hdev)) return -EINVAL; + ret = hub_port_status(hub, port1, &portstatus, &portchange); + if (ret < 0) + return ret; + + /* + * USB controller Advanced Micro Devices, Inc. [AMD] FCH USB XHCI + * Controller [1022:7814] will have spurious result making the following + * usb 3.0 device hotplugging route to the 2.0 root hub and recognized + * as high-speed device if we set the usb 3.0 port link state to + * Disabled. Since it's already in USB_SS_PORT_LS_RX_DETECT state, we + * check the state here to avoid the bug. + */ + if ((portstatus & USB_PORT_STAT_LINK_STATE) == + USB_SS_PORT_LS_RX_DETECT) { + dev_dbg(&hub->ports[port1 - 1]->dev, + "Not disabling port; link state is RxDetect\n"); + return ret; + } + ret = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_SS_DISABLED); if (ret) return ret; |