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usb: dwc3: fix bogus test in dwc3_gadget_start_isoc

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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>
This commit is contained in:
Paul Zimmerman 2012-02-17 14:10:16 -08:00 • committed by Felipe Balbi
parent 27a78d6a28
commit 9bafa56c7c
1 changed files with 5 additions and 11 deletions
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16
drivers/usb/dwc3/gadget.c
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@ -1656,7 +1656,7 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
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 @@ static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
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);
}