hi, if musb bulk_split is enable, the segment size will be set according to hw_ep->max_packet_sz_tx, and the segment will be writen to fifo. But after the first tranfser end, the segment size will be set no larger than qh->maxpacket (in musb_host_tx),and the bluk_split make no sense. so please check the following patch, I have tested it on my board. diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 6582a20..f251132 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -1455,8 +1455,8 @@ done: * (and presumably, FIFO is not half-full) we should write *two* * packets before updating TXCSR; other docs disagree... */ - if (length > qh->maxpacket) - length = qh->maxpacket; + if (length > qh->segsize) + length = qh->segsize; /* Unmap the buffer so that CPU can use it */ usb_hcd_unmap_urb_for_dma(musb->hcd, urb); -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
