diff mbox

[22/38] orinoco: fix checking for default value

Message ID 1442842450-29769-23-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/orinoco/cfg.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

David Miller Sept. 22, 2015, 11:15 p.m. UTC | #1
From: Andrzej Hajda <a.hajda@samsung.com>
Date: Mon, 21 Sep 2015 15:33:54 +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/orinoco/cfg.c b/drivers/net/wireless/orinoco/cfg.c
index a9e94b6..0f6ea31 100644
--- a/drivers/net/wireless/orinoco/cfg.c
+++ b/drivers/net/wireless/orinoco/cfg.c
@@ -220,7 +220,7 @@  static int orinoco_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 		/* Set fragmentation */
 		if (priv->has_mwo) {
-			if (wiphy->frag_threshold < 0)
+			if (wiphy->frag_threshold == -1)
 				frag_value = 0;
 			else {
 				printk(KERN_WARNING "%s: Fixed fragmentation "
@@ -230,7 +230,7 @@  static int orinoco_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 				frag_value = 1;
 			}
 		} else {
-			if (wiphy->frag_threshold < 0)
+			if (wiphy->frag_threshold == -1)
 				frag_value = 2346;
 			else if ((wiphy->frag_threshold < 257) ||
 				 (wiphy->frag_threshold > 2347))
@@ -252,7 +252,7 @@  static int orinoco_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 		 * the upper limit.
 		 */
 
-		if (wiphy->rts_threshold < 0)
+		if (wiphy->rts_threshold == -1)
 			rts_value = 2347;
 		else if (wiphy->rts_threshold > 2347)
 			err = -EINVAL;