ax25: non working tests on unsigned ax25_ctl.arg

[Roel Kluin <roel.kluin@gmail.com>]

vi include/linux/ax25.h +77
and note that ax25_ctl.arg is unsigned, should there maybe be a test

if (ax25_ctl.arg > MAX)
	return -EINVAL;

(and what should MAX be then?)

Otherwise you may want to apply the cleanup patch below

Roel
------------------------------>8-------------8<---------------------------------
Remove redundant tests on unsigned

Signed-off-by: Roel Kluin <roel.kluin@gmail.com> 
---
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index fd9d06f..9964df3 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -418,14 +418,10 @@ static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
 		break;
 
 	case AX25_T3:
-		if (ax25_ctl.arg < 0)
-			return -EINVAL;
 		ax25->t3 = ax25_ctl.arg * HZ;
 		break;
 
 	case AX25_IDLE:
-		if (ax25_ctl.arg < 0)
-			return -EINVAL;
 		ax25->idle = ax25_ctl.arg * 60 * HZ;
 		break;