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x86, mce: Fix set_trigger() accessor

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Fix the condition checking the result of strchr() (which previously
could result in an oops), and make the function return the number of
bytes actively used.

[ Impact: fix oops ]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <4A5F04B7020000780000AB59@vpn.id2.novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Jan Beulich 2009-07-16 09:45:11 +01:00 committed by H. Peter Anvin
parent ebe119cd09
commit e9084ec98b
1 changed files with 2 additions and 4 deletions
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6
arch/x86/kernel/cpu/mcheck/mce.c
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@ -1692,17 +1692,15 @@ static ssize_t set_trigger(struct sys_device *s, struct sysdev_attribute *attr,
const char *buf, size_t siz)
{
char *p;
int len;
strncpy(mce_helper, buf, sizeof(mce_helper));
mce_helper[sizeof(mce_helper)-1] = 0;
len = strlen(mce_helper);
p = strchr(mce_helper, '\n');
if (*p)
if (p)
*p = 0;
return len;
return strlen(mce_helper) + !!p;
}
static ssize_t set_ignore_ce(struct sys_device *s,