linux-kernel - [patch] pm_qos_params: cleanup: terminate a string

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Date:	Fri, 3 Sep 2010 14:41:06 +0200
From:	Dan Carpenter <error27@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	mark gross <markgross@...gnar.org>,
	James Bottomley <James.Bottomley@...e.de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jonathan Corbet <corbet@....net>, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch] pm_qos_params: cleanup: terminate a string

This is just a picky thing, but we pass an possibly unterminated string
to printk if debugging is turned on.  Also printk level is set to
"debug" by pr_debug() so the "KERN_ERR" isn't used.

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/kernel/pm_qos_params.c b/kernel/pm_qos_params.c
index b7e4c36..310a51e 100644
--- a/kernel/pm_qos_params.c
+++ b/kernel/pm_qos_params.c
@@ -389,10 +389,11 @@ static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
 	} else if (count == 11) { /* len('0x12345678/0') */
 		if (copy_from_user(ascii_value, buf, 11))
 			return -EFAULT;
+		ascii_value[10] = '\0';
 		x = sscanf(ascii_value, "%x", &value);
 		if (x != 1)
 			return -EINVAL;
-		pr_debug(KERN_ERR "%s, %d, 0x%x\n", ascii_value, x, value);
+		pr_debug("%s, %d, 0x%x\n", ascii_value, x, value);
 	} else
 		return -EINVAL;
 
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