From: Sherry Sun <[email protected]> Since the USB HID limits the maximum bandwidth(3072) for interrupt endpoint transfers, when the bInterval set to 1, we can only support 3 boards to run sdp at the same time. In order to support more boards, change the bInterval of interrupt endpoint to 3, which will not affect the transmission speed.
Reviewed-by: Ye Li <[email protected]> Signed-off-by: Sherry Sun <[email protected]> Signed-off-by: Peng Fan <[email protected]> --- drivers/usb/gadget/f_sdp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/f_sdp.c b/drivers/usb/gadget/f_sdp.c index c5b35945c1..e48aa2f90d 100644 --- a/drivers/usb/gadget/f_sdp.c +++ b/drivers/usb/gadget/f_sdp.c @@ -186,7 +186,7 @@ static struct usb_endpoint_descriptor in_hs_desc = { .bEndpointAddress = 1 | USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = 512, - .bInterval = 1, + .bInterval = 3, }; static struct usb_endpoint_descriptor out_hs_desc = { @@ -196,7 +196,7 @@ static struct usb_endpoint_descriptor out_hs_desc = { .bEndpointAddress = 1 | USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_INT, .wMaxPacketSize = SDP_HID_PACKET_SIZE_EP1, - .bInterval = 1, + .bInterval = 3, }; static struct usb_descriptor_header *sdp_runtime_descs[] = { -- 2.16.4
