From: Pavel Vasilyev <pavel@pavlinux.ru>
Date: Tue, 5 Jun 2012 04:02:05 +0000 (-0400)
Subject: ACPI sysfs.c strlen fix
X-Git-Tag: firefly_0821_release~7541^2~990
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c62f01893379dc5f831f2694553934f41c25bf32;p=firefly-linux-kernel-4.4.55.git

ACPI sysfs.c strlen fix

commit 9f132652d94c96476b0b0a8caf0c10e96ab10fa8 upstream.

Current code is ignoring the last character of "enable" and "disable"
in comparisons.

https://bugzilla.kernel.org/show_bug.cgi?id=33732

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 77255f250dbb..0364b05fb7a2 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -173,7 +173,7 @@ static int param_set_trace_state(const char *val, struct kernel_param *kp)
 {
 	int result = 0;
 
-	if (!strncmp(val, "enable", strlen("enable") - 1)) {
+	if (!strncmp(val, "enable", strlen("enable"))) {
 		result = acpi_debug_trace(trace_method_name, trace_debug_level,
 					  trace_debug_layer, 0);
 		if (result)
@@ -181,7 +181,7 @@ static int param_set_trace_state(const char *val, struct kernel_param *kp)
 		goto exit;
 	}
 
-	if (!strncmp(val, "disable", strlen("disable") - 1)) {
+	if (!strncmp(val, "disable", strlen("disable"))) {
 		int name = 0;
 		result = acpi_debug_trace((char *)&name, trace_debug_level,
 					  trace_debug_layer, 0);