small usblib cleanup

Reference: /n/atom/patch/applied/usblibbits
Date: Fri Mar 28 03:22:20 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/usb/lib/dev.c	Fri Mar 28 03:22:05 2014
+++ /sys/src/cmd/usb/lib/dev.c	Fri Mar 28 03:22:06 2014
@@ -375,11 +375,11 @@
 		ndata = count;
 		wp = emallocz(8+ndata, 0);
 	}
-	wp[0] = type;
-	wp[1] = req;
-	PUT2(wp+2, value);
-	PUT2(wp+4, index);
-	PUT2(wp+6, count);
+	wp[0] = type;			/* bmRequestType */
+	wp[1] = req;			/* bRequest */
+	PUT2(wp+2, value);		/* wValue */
+	PUT2(wp+4, index);		/* wIndex */
+	PUT2(wp+6, count);		/* wLength */
 	if(data != nil)
 		memmove(wp+8, data, ndata);
 	if(usbdebug>2){
--- /sys/src/cmd/usb/lib/dump.c	Fri Mar 28 03:22:08 2014
+++ /sys/src/cmd/usb/lib/dump.c	Fri Mar 28 03:22:09 2014
@@ -6,24 +6,24 @@
 
 int usbdebug;
 
-static char *edir[] = {"in", "out", "inout"};
-static char *etype[] = {"ctl", "iso", "bulk", "intr"};
+static char *edir[] = {"in", "out", "inout", };
+static char *etype[] = {"ctl", "iso", "bulk", "intr", };
 static char* cnames[] =
 {
 	"none", "audio", "comms", "hid", "",
-	"", "", "printer", "storage", "hub", "data"
+	"", "", "printer", "storage", "hub", "data",
 };
 static char* devstates[] =
 {
-	"detached", "attached", "enabled", "assigned", "configured"
+	"detached", "attached", "enabled", "assigned", "configured",
 };
 
 char*
-classname(int c)
+classname(uint c)
 {
 	static char buf[12];
 
-	if(c >= 0 && c < nelem(cnames))
+	if(c < nelem(cnames))
 		return cnames[c];
 	else{
 		snprint(buf, sizeof(buf), "%d", c);
--- /sys/src/cmd/usb/lib/usb.h	Fri Mar 28 03:22:10 2014
+++ /sys/src/cmd/usb/lib/usb.h	Fri Mar 28 03:22:11 2014
@@ -333,7 +333,7 @@
 #pragma	varargck	argpos	devctl	2
 
 int	Ufmt(Fmt *f);
-char*	classname(int c);
+char*	classname(uint c);
 void	closedev(Dev *d);
 int	configdev(Dev *d);
 int	devctl(Dev *dev, char *fmt, ...);