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/netgear-R7000-V1.0.7.12_1.2.5/components/opensource/linux/linux-2.6.36/drivers/usb/gadget/
H A Dfsl_qe_udc.c1035 u16 swoffs, ucoffs, emptybds; local
1051 emptybds = USB_BDRING_LEN_RX - ucoffs + swoffs;
1053 emptybds = swoffs - ucoffs;
1055 if (emptybds < MIN_EMPTY_BDS) {
1058 dev_vdbg(udc->dev, "%d empty bds, send NACK\n", emptybds);
1060 ep->has_data = USB_BDRING_LEN_RX - emptybds;

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