summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorFelipe Balbi <balbi@ti.com>2011-12-29 06:32:29 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-02-03 09:22:04 -0800
commit119fd91db5443904cddd1a6edbfe75f382ff25f5 (patch)
tree61e292466e72dd0be411b5095dde75f013c44186 /drivers
parentb270ee68838ee24d96849b87821f78088d28e1ba (diff)
usb: dwc3: ep0: tidy up Pending Request handling
commit 68d8a781575d7be490f97eb2c403fb13b083da6a upstream. The way our code was written, we should never have a DWC3_EP_PENDING_REQUEST flag set out of a Data Phase and the code in __dwc3_gadget_ep0_queue() did not reflect that situation properly. Tidy up that case to avoid any possible mistakes when starting requests for IRQs which are long gone. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/dwc3/ep0.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 69a4e43ddf59..27bd50a9e060 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -149,20 +149,14 @@ static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep,
direction = !!(dep->flags & DWC3_EP0_DIR_IN);
- if (dwc->ep0state == EP0_STATUS_PHASE) {
- type = dwc->three_stage_setup
- ? DWC3_TRBCTL_CONTROL_STATUS3
- : DWC3_TRBCTL_CONTROL_STATUS2;
- } else if (dwc->ep0state == EP0_DATA_PHASE) {
- type = DWC3_TRBCTL_CONTROL_DATA;
- } else {
- /* should never happen */
- WARN_ON(1);
+ if (dwc->ep0state != EP0_DATA_PHASE) {
+ dev_WARN(dwc->dev, "Unexpected pending request\n");
return 0;
}
ret = dwc3_ep0_start_trans(dwc, direction,
- req->request.dma, req->request.length, type);
+ req->request.dma, req->request.length,
+ DWC3_TRBCTL_CONTROL_DATA);
dep->flags &= ~(DWC3_EP_PENDING_REQUEST |
DWC3_EP0_DIR_IN);
}