X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fnet%2Fcan%2Fmscan%2Fmscan.c;h=4cc6f44c2ba2c1770ae74f377ed36a4d0e4e995d;hb=62ddc0046eae6b8e8374f0ac3b27b12a57baa2f6;hp=92feac68b66e725fbe8865d688d0fdabeb8ec1ae;hpb=2ff55e98d6e662a4887d2c688a4ab2ae510a97df;p=pandora-kernel.git

diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 92feac68b66e..4cc6f44c2ba2 100644
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -261,11 +261,13 @@ static netdev_tx_t mscan_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		void __iomem *data = &regs->tx.dsr1_0;
 		u16 *payload = (u16 *)frame->data;
 
-		/* It is safe to write into dsr[dlc+1] */
-		for (i = 0; i < (frame->can_dlc + 1) / 2; i++) {
+		for (i = 0; i < frame->can_dlc / 2; i++) {
 			out_be16(data, *payload++);
 			data += 2 + _MSCAN_RESERVED_DSR_SIZE;
 		}
+		/* write remaining byte if necessary */
+		if (frame->can_dlc & 1)
+			out_8(data, frame->data[frame->can_dlc - 1]);
 	}
 
 	out_8(&regs->tx.dlr, frame->can_dlc);
@@ -330,10 +332,13 @@ static void mscan_get_rx_frame(struct net_device *dev, struct can_frame *frame)
 		void __iomem *data = &regs->rx.dsr1_0;
 		u16 *payload = (u16 *)frame->data;
 
-		for (i = 0; i < (frame->can_dlc + 1) / 2; i++) {
+		for (i = 0; i < frame->can_dlc / 2; i++) {
 			*payload++ = in_be16(data);
 			data += 2 + _MSCAN_RESERVED_DSR_SIZE;
 		}
+		/* read remaining byte if necessary */
+		if (frame->can_dlc & 1)
+			frame->data[frame->can_dlc - 1] = in_8(data);
 	}
 
 	out_8(&regs->canrflg, MSCAN_RXF);