change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/drivers/usb/mtu3/mtu3_qmu.c
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@@ -210,6 +210,7 @@
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 	return ring->enqueue;
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 }
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+/* @dequeue may be NULL if ring is unallocated or freed */
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 static struct qmu_gpd *advance_deq_gpd(struct mtu3_gpd_ring *ring)
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 {
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 	if (ring->dequeue < ring->end)
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@@ -484,7 +485,7 @@
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 	dev_dbg(mtu->dev, "%s EP%d, last=%p, current=%p, enq=%p\n",
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 		__func__, epnum, gpd, gpd_current, ring->enqueue);
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-	while (gpd != gpd_current && !GET_GPD_HWO(gpd)) {
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+	while (gpd && gpd != gpd_current && !GET_GPD_HWO(gpd)) {
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 		mreq = next_request(mep);
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@@ -523,7 +524,7 @@
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 	dev_dbg(mtu->dev, "%s EP%d, last=%p, current=%p, enq=%p\n",
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 		__func__, epnum, gpd, gpd_current, ring->enqueue);
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-	while (gpd != gpd_current && !GET_GPD_HWO(gpd)) {
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+	while (gpd && gpd != gpd_current && !GET_GPD_HWO(gpd)) {
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 		mreq = next_request(mep);
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