diff mbox

[23/38] rndis_wlan: fix checking for default value

Message ID 1442842450-29769-24-git-send-email-a.hajda@samsung.com (mailing list archive)
State Not Applicable
Delegated to: Kalle Valo
Headers show

Commit Message

Andrzej Hajda Sept. 21, 2015, 1:33 p.m. UTC
Thresholds uses -1 to indicate that default value should be used.
Since thresholds are unsigned sign checking makes no sense.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
 drivers/net/wireless/rndis_wlan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

David Miller Sept. 22, 2015, 11:15 p.m. UTC | #1
From: Andrzej Hajda <a.hajda@samsung.com>
Date: Mon, 21 Sep 2015 15:33:55 +0200

> Thresholds uses -1 to indicate that default value should be used.
> Since thresholds are unsigned sign checking makes no sense.
> 
> The problem has been detected using proposed semantic patch
> scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].
> 
> [1]: http://permalink.gmane.org/gmane.linux.kernel/2038576
> 
> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>

Applied.
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diff mbox

Patch

diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 71a825c..a13d1f2 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -1236,7 +1236,7 @@  static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
 
 	netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
 
-	if (rts_threshold < 0 || rts_threshold > 2347)
+	if (rts_threshold == -1 || rts_threshold > 2347)
 		rts_threshold = 2347;
 
 	tmp = cpu_to_le32(rts_threshold);