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Send Stall in response to USB SET FEATURE or CLEAR FEATURE requests. Speeds up device enumeration on linux by 10s.
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parent
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15
common/usb.c
15
common/usb.c
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@ -259,6 +259,19 @@ static void UsbSendZeroLength(void)
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;
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;
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}
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}
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static void UsbSendStall(void)
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{
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UDP_ENDPOINT_CSR(0) |= UDP_CSR_FORCE_STALL;
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while(!(UDP_ENDPOINT_CSR(0) & UDP_CSR_STALL_SENT))
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;
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UDP_ENDPOINT_CSR(0) &= ~UDP_CSR_STALL_SENT;
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while(UDP_ENDPOINT_CSR(0) & UDP_CSR_STALL_SENT)
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;
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}
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static void HandleRxdSetupData(void)
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static void HandleRxdSetupData(void)
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{
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{
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int i;
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int i;
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@ -346,6 +359,8 @@ static void HandleRxdSetupData(void)
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case USB_REQUEST_CLEAR_FEATURE:
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case USB_REQUEST_CLEAR_FEATURE:
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case USB_REQUEST_SET_FEATURE:
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case USB_REQUEST_SET_FEATURE:
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UsbSendStall();
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break;
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case USB_REQUEST_SET_DESCRIPTOR:
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case USB_REQUEST_SET_DESCRIPTOR:
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case USB_REQUEST_SYNC_FRAME:
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case USB_REQUEST_SYNC_FRAME:
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default:
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default:
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