devuart: fix no memory panic with zero number of uarts

2012-02-04 16:41:46 +01:00 · 2012-02-04 16:41:46 +01:00 · 8d22d0b165
parent 25493360e3
commit 8d22d0b165
1 changed files with 1 additions and 1 deletions
--- a/sys/src/9/port/devuart.c
+++ b/sys/src/9/port/devuart.c
@ -194,7 +194,7 @@ uartreset(void)

 	uartndir = 1 + 3*uartnuart;
 	uartdir = xalloc(uartndir * sizeof(Dirtab));
-	if (uart == nil || uartdir == nil)
+	if(uartnuart && uart == nil || uartdir == nil)
 		panic("uartreset: no memory");
 	dp = uartdir;
 	strcpy(dp->name, ".");