change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/usb/usbip/vhci_tx.c
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@@ -189,16 +189,14 @@
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 	struct vhci_unlink *unlink = NULL;
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 	struct msghdr msg;
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-	struct kvec iov[3];
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+	struct kvec iov;
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 	size_t txsize;
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-
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 	size_t total_size = 0;
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 	while ((unlink = dequeue_from_unlink_tx(vdev)) != NULL) {
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 		int ret;
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 		struct usbip_header pdu_header;
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-		txsize = 0;
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 		memset(&pdu_header, 0, sizeof(pdu_header));
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 		memset(&msg, 0, sizeof(msg));
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 		memset(&iov, 0, sizeof(iov));
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@@ -214,11 +212,11 @@
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 		usbip_header_correct_endian(&pdu_header, 1);
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-		iov[0].iov_base = &pdu_header;
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-		iov[0].iov_len  = sizeof(pdu_header);
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-		txsize += sizeof(pdu_header);
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+		iov.iov_base = &pdu_header;
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+		iov.iov_len  = sizeof(pdu_header);
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+		txsize = sizeof(pdu_header);
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-		ret = kernel_sendmsg(vdev->ud.tcp_socket, &msg, iov, 1, txsize);
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+		ret = kernel_sendmsg(vdev->ud.tcp_socket, &msg, &iov, 1, txsize);
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 		if (ret != txsize) {
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 			pr_err("sendmsg failed!, ret=%d for %zd\n", ret,
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 			       txsize);