The value is 4, it can cache four descriptors. When streaming_interval = 1, it can tolerate 500us. Some busy scenes, it may be more than 500us because cpu scheduling is not timely. There will have some problems. It is better set to eight.
Signed-off-by: Pengcheng Li <lpc...@hisilicon.com> --- drivers/usb/gadget/function/uvc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/uvc.h b/drivers/usb/gadget/function/uvc.h index a64e07e..901487e 100644 --- a/drivers/usb/gadget/function/uvc.h +++ b/drivers/usb/gadget/function/uvc.h @@ -90,7 +90,7 @@ extern unsigned int uvc_gadget_trace_param; * Driver specific constants */ -#define UVC_NUM_REQUESTS 4 +#define UVC_NUM_REQUESTS 8 #define UVC_MAX_REQUEST_SIZE 64 #define UVC_MAX_EVENTS 4 -- 2.7.4
