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Date:      Sun, 2 Dec 2007 14:57:05 GMT
From:      Hans Petter Selasky <hselasky@FreeBSD.org>
To:        Perforce Change Reviews <perforce@FreeBSD.org>
Subject:   PERFORCE change 130019 for review
Message-ID:  <200712021457.lB2Ev5rv092822@repoman.freebsd.org>

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http://perforce.freebsd.org/chv.cgi?CH=130019

Change 130019 by hselasky@hselasky_laptop001 on 2007/12/02 14:56:17

	
	UCOM cannot use "usbd_get_page()". Use "usbd_get_buffer()" instead.

Affected files ...

.. //depot/projects/usb/src/sys/dev/usb/ucom.c#24 edit

Differences ...

==== //depot/projects/usb/src/sys/dev/usb/ucom.c#24 (text+ko) ====

@@ -1023,10 +1023,8 @@
 ucom_get_data(struct ucom_softc *sc, struct usbd_page_cache *pc,
     uint32_t offset, uint32_t len, uint32_t *actlen)
 {
-	struct usbd_page_search res;
 	struct tty *tp = sc->sc_tty;
 	uint32_t cnt;
-	uint32_t offset_orig;
 
 	mtx_assert(sc->sc_parent_mtx, MA_OWNED);
 
@@ -1056,28 +1054,11 @@
 		DPRINTF(0, "stopped\n");
 		goto done;
 	}
-	offset_orig = offset;
 
-	while (len > 0) {
+	cnt = q_to_b(&(tp->t_outq), usbd_get_buffer(pc,offset), len);
 
-		usbd_get_page(pc, offset, &res);
-
-		if (res.length > len) {
-			res.length = len;
-		}
-		cnt = q_to_b(&(tp->t_outq), res.buffer, res.length);
+	actlen[0] = cnt;
 
-		offset += cnt;
-		len -= cnt;
-
-		if (cnt < res.length) {
-			/* end of buffer */
-			break;
-		}
-	}
-
-	actlen[0] = offset - offset_orig;
-
 	DPRINTF(0, "cnt=%d\n", actlen[0]);
 
 	if (actlen[0] == 0) {
@@ -1099,8 +1080,8 @@
 ucom_put_data(struct ucom_softc *sc, struct usbd_page_cache *pc,
     uint32_t offset, uint32_t len)
 {
-	struct usbd_page_search res;
 	struct tty *tp = sc->sc_tty;
+	uint8_t *buf;
 	uint32_t cnt;
 
 	mtx_assert(sc->sc_parent_mtx, MA_OWNED);
@@ -1111,27 +1092,19 @@
 	}
 	/* set a flag to prevent recursation ? */
 
-	while (len > 0) {
-
-		usbd_get_page(pc, offset, &res);
-
-		if (res.length > len) {
-			res.length = len;
-		}
-		len -= res.length;
-		offset += res.length;
+	buf = usbd_get_buffer(pc, offset);
 
 		if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
 
-			if (((tp->t_rawq.c_cc + res.length) > tp->t_ihiwat) &&
+			if (((tp->t_rawq.c_cc + len) > tp->t_ihiwat) &&
 			    ((sc->sc_flag & UCOM_FLAG_RTS_IFLOW) ||
 			    (tp->t_iflag & IXOFF)) &&
 			    (!(tp->t_state & TS_TBLOCK))) {
 				ttyblock(tp);
 			}
-			cnt = b_to_q(res.buffer, res.length, &(tp->t_rawq));
+			cnt = b_to_q(buf, len, &(tp->t_rawq));
 
-			tp->t_rawcc += res.length;
+			tp->t_rawcc += len;
 
 			ttwakeup(tp);
 
@@ -1150,19 +1123,18 @@
 
 			/* pass characters to tty layer */
 
-			for (cnt = 0; cnt < res.length; cnt++) {
+			for (cnt = 0; cnt != len; cnt++) {
 
-				if (ttyld_rint(tp, ((uint8_t *)res.buffer)[cnt]) == -1) {
+				if (ttyld_rint(tp, buf[cnt]) == -1) {
 
 					/* XXX what should we do? */
 
 					DPRINTF(0, "tp=%p, lost %d "
-					    "chars\n", tp, res.length - cnt);
+					    "chars\n", tp, len - cnt);
 					break;
 				}
 			}
 		}
-	}
 
 	if ((sc->sc_flag & UCOM_FLAG_RTS_IFLOW) &&
 	    (!(sc->sc_mcr & SER_RTS)) &&



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