staging/lustre/libcfs: remove cfs_iswhite

Kernel provides isspace().

Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/include/linux/libcfs/libcfs_string.h

@@ -90,21 +90,6 @@ struct cfs_expr_list {
 	struct list_head	el_exprs;
 };
 
-static inline int
-cfs_iswhite(char c)
-{
-	switch (c) {
-	case ' ':
-	case '\t':
-	case '\n':
-	case '\r':
-		return 1;
-	default:
-		break;
-	}
-	return 0;
-}
-
 char *cfs_trimwhite(char *str);
 int cfs_gettok(struct cfs_lstr *next, char delim, struct cfs_lstr *res);
 int cfs_str2num_check(char *str, int nob, unsigned *num,

drivers/staging/lustre/lnet/lnet/config.c

@@ -443,7 +443,7 @@ lnet_str2tbs_sep(struct list_head *tbs, char *str)
 	/* Split 'str' into separate commands */
 	for (;;) {
 		/* skip leading whitespace */
-		while (cfs_iswhite(*str))
+		while (isspace(*str))
 			str++;
 
 		/* scan for separator or comment */
@@ -460,7 +460,7 @@ lnet_str2tbs_sep(struct list_head *tbs, char *str)
 			}
 
 			for (i = 0; i < nob; i++)
-				if (cfs_iswhite(str[i]))
+				if (isspace(str[i]))
 					ltb->ltb_text[i] = ' ';
 				else
 					ltb->ltb_text[i] = str[i];
@@ -667,7 +667,7 @@ lnet_parse_route(char *str, int *im_a_router)
 	sep = str;
 	for (;;) {
 		/* scan for token start */
-		while (cfs_iswhite(*sep))
+		while (isspace(*sep))
 			sep++;
 		if (*sep == 0) {
 			if (ntokens < (got_hops ? 3 : 2))
@@ -679,7 +679,7 @@ lnet_parse_route(char *str, int *im_a_router)
 		token = sep++;
 
 		/* scan for token end */
-		while (*sep != 0 && !cfs_iswhite(*sep))
+		while (*sep != 0 && !isspace(*sep))
 			sep++;
 		if (*sep != 0)
 			*sep++ = 0;
@@ -858,7 +858,7 @@ lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip)
 	sep = tokens;
 	for (;;) {
 		/* scan for token start */
-		while (cfs_iswhite(*sep))
+		while (isspace(*sep))
 			sep++;
 		if (*sep == 0)
 			break;
@@ -866,7 +866,7 @@ lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip)
 		token = sep++;
 
 		/* scan for token end */
-		while (*sep != 0 && !cfs_iswhite(*sep))
+		while (*sep != 0 && !isspace(*sep))
 			sep++;
 		if (*sep != 0)
 			*sep++ = 0;

drivers/staging/lustre/lustre/libcfs/libcfs_string.c

@@ -143,12 +143,12 @@ cfs_trimwhite(char *str)
 {
 	char *end;
 
-	while (cfs_iswhite(*str))
+	while (isspace(*str))
 		str++;
 
 	end = str + strlen(str);
 	while (end > str) {
-		if (!cfs_iswhite(end[-1]))
+		if (!isspace(end[-1]))
 			break;
 		end--;
 	}
@@ -178,7 +178,7 @@ cfs_gettok(struct cfs_lstr *next, char delim, struct cfs_lstr *res)
 
 	/* skip leading white spaces */
 	while (next->ls_len) {
-		if (!cfs_iswhite(*next->ls_str))
+		if (!isspace(*next->ls_str))
 			break;
 		next->ls_str++;
 		next->ls_len--;
@@ -205,7 +205,7 @@ cfs_gettok(struct cfs_lstr *next, char delim, struct cfs_lstr *res)
 
 	/* skip ending whitespaces */
 	while (--end != res->ls_str) {
-		if (!cfs_iswhite(*end))
+		if (!isspace(*end))
 			break;
 	}
 
@@ -234,7 +234,7 @@ cfs_str2num_check(char *str, int nob, unsigned *num,
 		return 0;
 
 	for (; endp < str + nob; endp++) {
-		if (!cfs_iswhite(*endp))
+		if (!isspace(*endp))
 			return 0;
 	}