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usb: dwc3: clear 'res_trans_idx' as soon as it becomes invalid 

Transfer resource index is cleared in hardware when XFERCOMPLETE
event is generated, so clear the driver's res_trans_idx variable
immediately after that event is received. The upcoming hibernation
patches depend on this change.

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Paul Zimmerman 2012-02-24 17:32:18 -08:00 committed by Felipe Balbi
parent 249a456930
commit c2df85ca31
2 changed files with 4 additions and 3 deletions
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1
drivers/usb/dwc3/ep0.c
View File

@ -617,6 +617,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
struct dwc3_ep *dep = dwc->eps[event->endpoint_number]; struct dwc3_ep *dep = dwc->eps[event->endpoint_number];
dep->flags &= ~DWC3_EP_BUSY; dep->flags &= ~DWC3_EP_BUSY;
dep->res_trans_idx = 0;
dwc->setup_packet_pending = false; dwc->setup_packet_pending = false;
switch (dwc->ep0state) { switch (dwc->ep0state) {

6
drivers/usb/dwc3/gadget.c
View File

@ -1628,10 +1628,8 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
status = -ECONNRESET; status = -ECONNRESET;
clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status); clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status);
if (clean_busy) { if (clean_busy)
dep->flags &= ~DWC3_EP_BUSY; dep->flags &= ~DWC3_EP_BUSY;
dep->res_trans_idx = 0;
}
/* /*
* WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround. * WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.
@ -1736,6 +1734,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
switch (event->endpoint_event) { switch (event->endpoint_event) {
case DWC3_DEPEVT_XFERCOMPLETE: case DWC3_DEPEVT_XFERCOMPLETE:
dep->res_trans_idx = 0;
if (usb_endpoint_xfer_isoc(dep->desc)) { if (usb_endpoint_xfer_isoc(dep->desc)) {
dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n", dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n",
dep->name); dep->name);