diff --git a/drivers/staging/speakup/kobjects.c b/drivers/staging/speakup/kobjects.c
index 2e36d872662c..11c704b27c3c 100644
--- a/drivers/staging/speakup/kobjects.c
+++ b/drivers/staging/speakup/kobjects.c
@@ -154,6 +154,7 @@ static ssize_t chars_chartab_store(struct kobject *kobj,
 			continue;
 		}
 
+		/* Do not replace with kstrtoul: here we need temp to be updated */
 		index = simple_strtoul(cp, &temp, 10);
 		if (index > 255) {
 			rejected++;
@@ -787,6 +788,7 @@ static ssize_t message_store_helper(const char *buf, size_t count,
 			continue;
 		}
 
+		/* Do not replace with kstrtoul: here we need temp to be updated */
 		index = simple_strtoul(cp, &temp, 10);
 
 		while ((temp < linefeed) && (*temp == ' ' || *temp == '\t'))
diff --git a/drivers/staging/speakup/main.c b/drivers/staging/speakup/main.c
index 869f40ebf1a7..c092a8ea45e2 100644
--- a/drivers/staging/speakup/main.c
+++ b/drivers/staging/speakup/main.c
@@ -1979,6 +1979,7 @@ static int handle_goto(struct vc_data *vc, u_char type, u_char ch, u_short key)
 		return 1;
 	}
 
+	/* Do not replace with kstrtoul: here we need cp to be updated */
 	goto_pos = simple_strtoul(goto_buf, &cp, 10);
 
 	if (*cp == 'x') {
diff --git a/drivers/staging/speakup/varhandlers.c b/drivers/staging/speakup/varhandlers.c
index 1b545152cc49..3c944cb8f547 100644
--- a/drivers/staging/speakup/varhandlers.c
+++ b/drivers/staging/speakup/varhandlers.c
@@ -328,6 +328,7 @@ char *spk_s2uchar(char *start, char *dest)
 {
 	int val;
 
+	/* Do not replace with kstrtoul: here we need start to be updated */
 	val = simple_strtoul(skip_spaces(start), &start, 10);
 	if (*start == ',')
 		start++;