always response if GET_INTERFACE even if class driver does not support alt interface
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@ -573,7 +573,16 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
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// all requests to Interface (STD or Class) is forwarded to class driver.
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// all requests to Interface (STD or Class) is forwarded to class driver.
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// notable requests are: GET HID REPORT DESCRIPTOR, SET_INTERFACE, GET_INTERFACE
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// notable requests are: GET HID REPORT DESCRIPTOR, SET_INTERFACE, GET_INTERFACE
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TU_VERIFY(invoke_class_control(rhport, drvid, p_request));
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if ( !invoke_class_control(rhport, drvid, p_request) )
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{
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// For STD GET_INTERFACE even if class driver doesn't support alternate setting
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// It is still mandatory to response with value of zero
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TU_VERIFY( TUSB_REQ_TYPE_STANDARD == p_request->bmRequestType_bit.type &&
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TUSB_REQ_GET_INTERFACE == p_request->bRequest);
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uint8_t alternate = 0;
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tud_control_xfer(rhport, p_request, &alternate, 1);
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}
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}
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}
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break;
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break;
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