USB fixes for 3.16-rc6
Here are 2 USB patches that resolve some reported issues, one with an odd HUB, and one in the chipidea driver. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlPMHpMACgkQMUfUDdst+ymQIQCeOK2oC0C5h1P7HHAQ4UiGpSgt MHwAoJfAeqF77RajND+m4ds6hwc5h8IF =ufek -----END PGP SIGNATURE----- Merge tag 'usb-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are two USB patches that resolve some reported issues, one with an odd HUB, and one in the chipidea driver" * tag 'usb-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: Check if port status is equal to RxDetect usb: chipidea: udc: Disable auto ZLP generation on ep0
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caa7c4e172
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@ -1169,8 +1169,8 @@ static int ep_enable(struct usb_ep *ep,
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if (hwep->type == USB_ENDPOINT_XFER_CONTROL)
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cap |= QH_IOS;
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if (hwep->num)
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cap |= QH_ZLT;
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cap |= QH_ZLT;
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cap |= (hwep->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT;
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/*
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* For ISO-TX, we set mult at QH as the largest value, and use
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@ -889,6 +889,25 @@ static int hub_usb3_port_disable(struct usb_hub *hub, int port1)
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if (!hub_is_superspeed(hub->hdev))
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return -EINVAL;
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ret = hub_port_status(hub, port1, &portstatus, &portchange);
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if (ret < 0)
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return ret;
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/*
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* USB controller Advanced Micro Devices, Inc. [AMD] FCH USB XHCI
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* Controller [1022:7814] will have spurious result making the following
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* usb 3.0 device hotplugging route to the 2.0 root hub and recognized
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* as high-speed device if we set the usb 3.0 port link state to
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* Disabled. Since it's already in USB_SS_PORT_LS_RX_DETECT state, we
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* check the state here to avoid the bug.
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*/
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if ((portstatus & USB_PORT_STAT_LINK_STATE) ==
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USB_SS_PORT_LS_RX_DETECT) {
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dev_dbg(&hub->ports[port1 - 1]->dev,
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"Not disabling port; link state is RxDetect\n");
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return ret;
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}
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ret = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_SS_DISABLED);
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if (ret)
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return ret;
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