X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/92b76dca553a98a228f368f8ff6eedc25e33b870..d659fb1c5ce646e10820cfd349d8a4220d1ee67d:/lincan/src/write.c

diff --git a/lincan/src/write.c b/lincan/src/write.c
index 1760bc2..e3809b0 100644
--- a/lincan/src/write.c
+++ b/lincan/src/write.c
@@ -53,8 +53,10 @@ ssize_t can_write(struct file *file, const char *buffer, size_t length, loff_t *
 
 	/* Prepare first message */
 	copy_from_user(&msg_buff, buffer, sizeof(struct canmsg_t));
-	/* Automatic selection of extended format if "extended" set and ID>2047 */
-	if (extended) if (msg_buff.id & ~0x7ffl ) msg_buff.flags |= MSG_EXT;
+
+	/* Automatic selection of extended format if ID>2047 */
+	if (msg_buff.id & ~0x7ffl & MSG_ID_MASK ) msg_buff.flags |= MSG_EXT;
+	/* has been dependent on "extended" option */
 
 	/* If the output buffer is full, return immediately in case O_NONBLOCK
 	 * has been specified or loop until space becomes available.
@@ -89,8 +91,11 @@ ssize_t can_write(struct file *file, const char *buffer, size_t length, loff_t *
 		bytes_to_copy -= sizeof(struct canmsg_t);
 		/* Prepare first message */
 		copy_from_user(&msg_buff, buffer, sizeof(struct canmsg_t));
-		/* Automatic selection of extended format if "extended" set and ID>2047 */
-		if (extended) if (msg_buff.id & ~0x7ffl ) msg_buff.flags |= MSG_EXT;
+
+		/* Automatic selection of extended format if ID>2047 */
+		if (msg_buff.id & ~0x7ffl & MSG_ID_MASK ) msg_buff.flags |= MSG_EXT;
+		/* has been dependent on "extended" option */
+
 		/* Get slot */
 		if(canque_get_inslot4id(qends, &qedge, &slot, 
 			0, msg_buff.id, 0) < 0) break;