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UPSTREAM: usb: dwc2: gadget: Check for ep0 in enable

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Replaced the WARN_ON with a check and return of -EINVAL in the
dwc2_hsotg_ep_enable function if ep0 is passed in.

Change-Id: Idf4bf147a52ff9dca294f76263438e41cc511cfc
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
(cherry picked from commit 8c3d609275)
This commit is contained in:
Vahram Aharonyan
2016-04-27 20:20:46 -07:00
committed by Huang, Tao
parent 1f6a1f5c5d
commit 4e026285ea
1 changed files with 4 additions and 1 deletions
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5
drivers/usb/dwc2/gadget.c
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@@ -2631,7 +2631,10 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep,
desc->wMaxPacketSize, desc->bInterval);
/* not to be called for EP0 */
WARN_ON(index == 0);
if (index == 0) {
dev_err(hsotg->dev, "%s: called for EP 0\n", __func__);
return -EINVAL;
}
dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0;
if (dir_in != hs_ep->dir_in) {