pxe: Tidy up code style a little in pxe_utils

There are a few more blank lines than makes sense for readability. Also
free() handles a NULL pointer so drop the pointless checks.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Artem Lapkin <email2tema@gmail.com>
Tested-by: Artem Lapkin <email2tema@gmail.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>

diff --git a/boot/pxe_utils.c b/boot/pxe_utils.c
index d591798eda2d8514dbbdd4577c3baff64a434a05..6ecd15ceadac0dc06fbec3faaf5fd9d50f774985 100644 (file)
--- a/boot/pxe_utils.c
+++ b/boot/pxe_utils.c
@@ -51,7 +51,6 @@ int format_mac_pxe(char *outbuf, size_t outbuf_len)
 
        if (outbuf_len < 21) {
                printf("outbuf is too small (%zd < 21)\n", outbuf_len);
-
                return -ENOSPC;
        }
 
@@ -91,12 +90,10 @@ static int get_bootfile_path(const char *file_path, char *bootfile_path,
                goto ret;
 
        bootfile = from_env("bootfile");
-
        if (!bootfile)
                goto ret;
 
        last_slash = strrchr(bootfile, '/');
-
        if (!last_slash)
                goto ret;
 
@@ -140,7 +137,6 @@ static int get_relfile(struct pxe_context *ctx, const char *file_path,
 
        err = get_bootfile_path(file_path, relfile, sizeof(relfile),
                                ctx->allow_abs_path);
-
        if (err < 0)
                return err;
 
@@ -181,7 +177,6 @@ int get_pxe_file(struct pxe_context *ctx, const char *file_path,
        char *buf;
 
        err = get_relfile(ctx, file_path, file_addr);
-
        if (err < 0)
                return err;
 
@@ -190,7 +185,6 @@ int get_pxe_file(struct pxe_context *ctx, const char *file_path,
         * and add the NUL byte.
         */
        tftp_filesize = from_env("filesize");
-
        if (!tftp_filesize)
                return -ENOENT;
 
@@ -253,7 +247,6 @@ static int get_relfile_envaddr(struct pxe_context *ctx, const char *file_path,
        char *envaddr;
 
        envaddr = from_env(envaddr_name);
-
        if (!envaddr)
                return -ENOENT;
 
@@ -276,7 +269,6 @@ static struct pxe_label *label_create(void)
        struct pxe_label *label;
 
        label = malloc(sizeof(struct pxe_label));
-
        if (!label)
                return NULL;
 
@@ -300,30 +292,14 @@ static struct pxe_label *label_create(void)
  */
 static void label_destroy(struct pxe_label *label)
 {
-       if (label->name)
-               free(label->name);
-
-       if (label->kernel)
-               free(label->kernel);
-
-       if (label->config)
-               free(label->config);
-
-       if (label->append)
-               free(label->append);
-
-       if (label->initrd)
-               free(label->initrd);
-
-       if (label->fdt)
-               free(label->fdt);
-
-       if (label->fdtdir)
-               free(label->fdtdir);
-
-       if (label->fdtoverlays)
-               free(label->fdtoverlays);
-
+       free(label->name);
+       free(label->kernel);
+       free(label->config);
+       free(label->append);
+       free(label->initrd);
+       free(label->fdt);
+       free(label->fdtdir);
+       free(label->fdtoverlays);
        free(label);
 }
 
@@ -359,7 +335,6 @@ static int label_localboot(struct pxe_label *label)
        char *localcmd;
 
        localcmd = from_env("localcmd");
-
        if (!localcmd)
                return -ENOENT;
 
@@ -737,8 +712,8 @@ static int label_boot(struct pxe_context *ctx, struct pxe_label *label)
        unmap_sysmem(buf);
 
 cleanup:
-       if (fit_addr)
-               free(fit_addr);
+       free(fit_addr);
+
        return 1;
 }
 
@@ -851,7 +826,6 @@ static char *get_string(char **p, struct token *t, char delim, int lower)
         */
        b = *p;
        e = *p;
-
        while (*e) {
                if ((delim == ' ' && isspace(*e)) || delim == *e)
                        break;
@@ -877,11 +851,8 @@ static char *get_string(char **p, struct token *t, char delim, int lower)
 
        t->val[len] = '\0';
 
-       /*
-        * Update *p so the caller knows where to continue scanning.
-        */
+       /* Update *p so the caller knows where to continue scanning */
        *p = e;
-
        t->type = T_STRING;
 
        return t->val;
@@ -1007,7 +978,6 @@ static int parse_integer(char **c, int *dst)
        char *s = *c;
 
        get_token(c, &t, L_SLITERAL);
-
        if (t.type != T_STRING) {
                printf("Expected string: %.*s\n", (int)(*c - s), s);
                return -EINVAL;
@@ -1041,14 +1011,12 @@ static int handle_include(struct pxe_context *ctx, char **c, unsigned long base,
        int ret;
 
        err = parse_sliteral(c, &include_path);
-
        if (err < 0) {
                printf("Expected include path: %.*s\n", (int)(*c - s), s);
                return err;
        }
 
        err = get_pxe_file(ctx, include_path, base);
-
        if (err < 0) {
                printf("Couldn't retrieve %s\n", include_path);
                return err;
@@ -1098,7 +1066,6 @@ static int parse_menu(struct pxe_context *ctx, char **c, struct pxe_menu *cfg,
                printf("Ignoring malformed menu command: %.*s\n",
                       (int)(*c - s), s);
        }
-
        if (err < 0)
                return err;
 
@@ -1372,11 +1339,8 @@ void destroy_pxe_menu(struct pxe_menu *cfg)
        struct list_head *pos, *n;
        struct pxe_label *label;
 
-       if (cfg->title)
-               free(cfg->title);
-
-       if (cfg->default_label)
-               free(cfg->default_label);
+       free(cfg->title);
+       free(cfg->default_label);
 
        list_for_each_safe(pos, n, &cfg->labels) {
                label = list_entry(pos, struct pxe_label, list);
@@ -1394,7 +1358,6 @@ struct pxe_menu *parse_pxefile(struct pxe_context *ctx, unsigned long menucfg)
        int r;
 
        cfg = malloc(sizeof(struct pxe_menu));
-
        if (!cfg)
                return NULL;
 
@@ -1405,7 +1368,6 @@ struct pxe_menu *parse_pxefile(struct pxe_context *ctx, unsigned long menucfg)
        buf = map_sysmem(menucfg, 0);
        r = parse_pxefile_top(ctx, buf, menucfg, cfg, 1);
        unmap_sysmem(buf);
-
        if (r < 0) {
                destroy_pxe_menu(cfg);
                return NULL;
@@ -1432,7 +1394,6 @@ static struct menu *pxe_menu_to_menu(struct pxe_menu *cfg)
         */
        m = menu_create(cfg->title, DIV_ROUND_UP(cfg->timeout, 10),
                        cfg->prompt, NULL, label_print, NULL, NULL);
-
        if (!m)
                return NULL;
 
@@ -1511,7 +1472,6 @@ void handle_pxe_menu(struct pxe_context *ctx, struct pxe_menu *cfg)
                return;
 
        err = menu_get_choice(m, &choice);
-
        menu_destroy(m);
 
        /*