Plan 9 from Bell Labs 2011-10-07

sys/man/8/plan9.ini

@@ -17,6 +17,16 @@ name=\f2value\fP
 .EE
 .LP
 each of which defines a kernel or device parameter.
+If
+.I 9load
+or
+.I 9pxeload
+loads the kernel over the network instead,
+this file will be named
+.BI /cfg/pxe/ hex-digits
+(see
+.IR 9load (8))
+on the local TFTP server.
 .PP
 Blank lines and
 Carriage Returns

sys/src/cmd/usb/serial/serial.c

@@ -542,13 +542,11 @@ dread(Usbfs *fs, Fid *fid, void *data, long count, vlong offset)
 		count = rcount;
 		break;
 	case Qctl:
-		if(offset != 0)
+		if(offset != 0 || p->isjtag)
 			count = 0;
 		else {
-			if(!p->isjtag){
-				e = serdumpst(p, buf, Serbufsize);
-				count = usbreadbuf(data, count, 0, buf, e - buf);
-			}
+			e = serdumpst(p, buf, Serbufsize);
+			count = usbreadbuf(data, count, 0, buf, e - buf);
 		}
 		break;
 	}