Aurelien Jacobs pointed out inline functions that could be removed. Doing so

shrank the code a bit.


git-svn-id: svn://busybox.net/trunk/busybox@15453 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 13 insertions, 29 deletions

diff --git a/miscutils/rx.c b/miscutils/rx.c
index 7642094b7..cff5a627b 100644
--- a/miscutils/rx.c
+++ b/miscutils/rx.c
@@ -39,7 +39,6 @@
 #define EOT 0x04
 #define ACK 0x06
 #define NAK 0x15
-#define CAN 0x18
 #define BS  0x08
 
 /*
@@ -57,18 +56,6 @@ Cf:
 #define TIMEOUT_LONG 10
 #define MAXERRORS 10
 
-static inline void write_byte(int fd, char cc) {
-        write(fd, &cc, 1);
-}
-
-static inline void write_flush(int fd) {
-        tcdrain(fd);
-}
-
-static inline void read_flush(int fd) {
-        tcflush(fd, TCIFLUSH);
-}
-
 static int read_byte(int fd, unsigned int timeout) {
         char buf[1];
         int n;
@@ -99,11 +86,11 @@ static int receive(char *error_buf, size_t error_buf_size,
 #define note_error(fmt,args...) \
         snprintf(error_buf, error_buf_size, fmt,##args)
 
-        read_flush(ttyfd);
+        /* Flush pending input */
+        tcflush(ttyfd, TCIFLUSH);
 
         /* Ask for CRC; if we get errors, we will go with checksum */
-        write_byte(ttyfd, nak);
-        write_flush(ttyfd);
+        write(ttyfd, &nak, 1);
 
         for (;;) {
                 int blockBegin;
@@ -126,8 +113,8 @@ static int receive(char *error_buf, size_t error_buf_size,
                         break;
 
                 case EOT:
-                        write_byte(ttyfd, ACK);
-                        write_flush(ttyfd);
+                        nak = ACK;
+                        write(ttyfd, &nak, 1);
                         goto done;
 
                 default:
@@ -232,8 +219,8 @@ static int receive(char *error_buf, size_t error_buf_size,
 
         next:
                 errors = 0;
-                write_byte(ttyfd, ACK);
-                write_flush(ttyfd);
+                nak = ACK;
+                write(ttyfd, &nak, 1);
                 continue;
 
         error:
@@ -241,7 +228,6 @@ static int receive(char *error_buf, size_t error_buf_size,
                 errors++;
                 if (errors == MAXERRORS) {
                         /* Abort */
-                        int i;
 
                         // if using crc, try again w/o crc
                         if (nak == 'C') {
@@ -254,17 +240,15 @@ static int receive(char *error_buf, size_t error_buf_size,
                         note_error("too many errors; giving up");
 
                 fatal:
-                        for (i = 0; i < 5; i ++)
-                                write_byte(ttyfd, CAN);
-                        for (i = 0; i < 5; i ++)
-                                write_byte(ttyfd, BS);
-                        write_flush(ttyfd);
+                        /* 5 CAN followed by 5 BS */
+                        write(ttyfd, "\030\030\030\030\030\010\010\010\010\010", 10);
                         return -1;
                 }
 
-                read_flush(ttyfd);
-                write_byte(ttyfd, nak);
-                write_flush(ttyfd);
+                /* Flush pending input */
+                tcflush(ttyfd, TCIFLUSH);
+
+                write(ttyfd, &nak, 1);
         }
 
  done: