usb: dwc3: fix bogus test in dwc3_gadget_start_isoc
Zero is a valid value for a microframe number. So remove the bogus
test for non-zero in dwc3_gadget_start_isoc().
Cc: stable@vger.kernel.org
Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 60b75c3..fac1149 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1656,7 +1656,7 @@
static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
struct dwc3_ep *dep, const struct dwc3_event_depevt *event)
{
- u32 uf;
+ u32 uf, mask;
if (list_empty(&dep->request_list)) {
dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n",
@@ -1664,16 +1664,10 @@
return;
}
- if (event->parameters) {
- u32 mask;
-
- mask = ~(dep->interval - 1);
- uf = event->parameters & mask;
- /* 4 micro frames in the future */
- uf += dep->interval * 4;
- } else {
- uf = 0;
- }
+ mask = ~(dep->interval - 1);
+ uf = event->parameters & mask;
+ /* 4 micro frames in the future */
+ uf += dep->interval * 4;
__dwc3_gadget_kick_transfer(dep, uf, 1);
}