X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=kernel%2Fsysctl.c;h=c6d9dec11b749de9b66d88498236a4e00f7cbf87;hb=810f2cfdfe4e072555781fa5dd188949195dda16;hp=188c305aeb8b7fd8984721122dcfe11bd658aeaa;hpb=27bc50fc90647bbf7b734c3fc306a5e61350da53;p=platform%2Fkernel%2Flinux-starfive.git

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 188c305..c6d9dec 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -267,13 +267,14 @@ int proc_dostring(struct ctl_table *table, int write,
 			ppos);
 }
 
-static size_t proc_skip_spaces(char **buf)
+static void proc_skip_spaces(char **buf, size_t *size)
 {
-	size_t ret;
-	char *tmp = skip_spaces(*buf);
-	ret = tmp - *buf;
-	*buf = tmp;
-	return ret;
+	while (*size) {
+		if (!isspace(**buf))
+			break;
+		(*size)--;
+		(*buf)++;
+	}
 }
 
 static void proc_skip_char(char **buf, size_t *size, const char v)
@@ -342,13 +343,12 @@ static int proc_get_long(char **buf, size_t *size,
 			  unsigned long *val, bool *neg,
 			  const char *perm_tr, unsigned perm_tr_len, char *tr)
 {
-	int len;
 	char *p, tmp[TMPBUFLEN];
+	ssize_t len = *size;
 
-	if (!*size)
+	if (len <= 0)
 		return -EINVAL;
 
-	len = *size;
 	if (len > TMPBUFLEN - 1)
 		len = TMPBUFLEN - 1;
 
@@ -521,7 +521,7 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
 		bool neg;
 
 		if (write) {
-			left -= proc_skip_spaces(&p);
+			proc_skip_spaces(&p, &left);
 
 			if (!left)
 				break;
@@ -548,7 +548,7 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
 	if (!write && !first && left && !err)
 		proc_put_char(&buffer, &left, '\n');
 	if (write && !err && left)
-		left -= proc_skip_spaces(&p);
+		proc_skip_spaces(&p, &left);
 	if (write && first)
 		return err ? : -EINVAL;
 	*lenp -= left;
@@ -590,7 +590,7 @@ static int do_proc_douintvec_w(unsigned int *tbl_data,
 	if (left > PAGE_SIZE - 1)
 		left = PAGE_SIZE - 1;
 
-	left -= proc_skip_spaces(&p);
+	proc_skip_spaces(&p, &left);
 	if (!left) {
 		err = -EINVAL;
 		goto out_free;
@@ -610,7 +610,7 @@ static int do_proc_douintvec_w(unsigned int *tbl_data,
 	}
 
 	if (!err && left)
-		left -= proc_skip_spaces(&p);
+		proc_skip_spaces(&p, &left);
 
 out_free:
 	if (err)
@@ -1075,7 +1075,7 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table,
 		if (write) {
 			bool neg;
 
-			left -= proc_skip_spaces(&p);
+			proc_skip_spaces(&p, &left);
 			if (!left)
 				break;
 
@@ -1104,7 +1104,7 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table,
 	if (!write && !first && left && !err)
 		proc_put_char(&buffer, &left, '\n');
 	if (write && !err)
-		left -= proc_skip_spaces(&p);
+		proc_skip_spaces(&p, &left);
 	if (write && first)
 		return err ? : -EINVAL;
 	*lenp -= left;