From 9821786d7c90eee2f6852261893d9703801aae47 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Mon, 18 Sep 2017 17:39:12 +0300 Subject: [PATCH] usb: xhci: Free the right ring in xhci_add_endpoint() In the xhci_add_endpoint(), a new ring was allocated and saved at xhci_virt_ep->new_ring. Hence, when error happens, we need to free the allocated ring before returning error. Current code frees xhci_virt_ep->ring instead of the new_ring. This patch fixes this. Cc: Signed-off-by: Lu Baolu Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index b2ff1ff1a02f..ee198ea47f49 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1703,7 +1703,8 @@ static int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, if (xhci->quirks & XHCI_MTK_HOST) { ret = xhci_mtk_add_ep_quirk(hcd, udev, ep); if (ret < 0) { - xhci_free_endpoint_ring(xhci, virt_dev, ep_index); + xhci_ring_free(xhci, virt_dev->eps[ep_index].new_ring); + virt_dev->eps[ep_index].new_ring = NULL; return ret; } }