mdev: tiny shrinkage by index_in_strings

text	   data	    bss	    dec	    hex	filename
      2633	      0	      0	   2633	    a49	util-linux/mdev.o.old
      2624	      0	      0	   2624	    a40	util-linux/mdev.o

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/util-linux/mdev.c b/util-linux/mdev.c
index 2ac15e762..d0aafac6e 100644
--- a/util-linux/mdev.c
+++ b/util-linux/mdev.c
@@ -526,6 +526,9 @@ int mdev_main(int argc UNUSED_PARAM, char **argv)
                 char *seq;
                 char *action;
                 char *env_path;
+                static const char keywords[] ALIGN1 = "remove\0add\0";
+                enum { OP_remove = 0, OP_add };
+                smalluint op;
 
                 /* Hotplug:
                  * env ACTION=... DEVPATH=... SUBSYSTEM=... [SEQNUM=...] mdev
@@ -538,7 +541,7 @@ int mdev_main(int argc UNUSED_PARAM, char **argv)
                 if (!action || !env_path /*|| !subsystem*/)
                         bb_show_usage();
                 fw = getenv("FIRMWARE");
-
+                op = index_in_strings(keywords, action);
                 /* If it exists, does /dev/mdev.seq match $SEQNUM?
                  * If it does not match, earlier mdev is running
                  * in parallel, and we need to wait */
@@ -565,14 +568,14 @@ int mdev_main(int argc UNUSED_PARAM, char **argv)
                 }
 
                 snprintf(temp, PATH_MAX, "/sys%s", env_path);
-                if (strcmp(action, "remove") == 0) {
+                if (op == OP_remove) {
                         /* Ignoring "remove firmware". It was reported
                          * to happen and to cause erroneous deletion
                          * of device nodes. */
                         if (!fw)
                                 make_device(temp, 1);
                 }
-                else if (strcmp(action, "add") == 0) {
+                else if (op == OP_add) {
                         make_device(temp, 0);
                         if (ENABLE_FEATURE_MDEV_LOAD_FIRMWARE) {
                                 if (fw)