linux-kernel - [PATCH 1/2] test_kmod: remove paranoid UINT

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Message-Id: <20170802211707.28020-2-mcgrof@kernel.org>
Date:   Wed,  2 Aug 2017 14:17:06 -0700
From:   "Luis R. Rodriguez" <mcgrof@...nel.org>
To:     akpm@...ux-foundation.org
Cc:     dmitry.torokhov@...il.com, keescook@...omium.org, jeyu@...hat.com,
        rusty@...tcorp.com.au, mmarek@...e.com, pmladek@...e.com,
        mbenes@...e.cz, jpoimboe@...hat.com, ebiederm@...ssion.com,
        shuah@...nel.org, dan.carpenter@...cle.com,
        colin.king@...onical.com, dcb314@...mail.com,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Luis R . Rodriguez" <mcgrof@...nel.org>
Subject: [PATCH 1/2] test_kmod: remove paranoid UINT_MAX check on uint range processing

From: Dan Carpenter <dan.carpenter@...cle.com>

The UINT_MAX comparison is not needed because "max" is already an unsigned
int, and we expect developer C code max value input to have a sensible
0 - UINT_MAX range. Note that if it so happens to be UINT_MAX + 1 it
would lead to an issue, but we expect the developer to know this.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
[mcgrof: massaged commit log]
Signed-off-by: Luis R. Rodriguez <mcgrof@...nel.org>
---
 lib/test_kmod.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/test_kmod.c b/lib/test_kmod.c
index ff9148969b92..67fc7b9f41e3 100644
--- a/lib/test_kmod.c
+++ b/lib/test_kmod.c
@@ -924,7 +924,7 @@ static int test_dev_config_update_uint_range(struct kmod_test_device *test_dev,
 	if (ret)
 		return ret;
 
-	if (new < min || new >  max || new > UINT_MAX)
+	if (new < min || new > max)
 		return -EINVAL;
 
 	mutex_lock(&test_dev->config_mutex);
-- 
2.11.0