bitq: remove dead code

field->in_value is already checked so it must be non-null here, which means
the else clause can never execute so the entire buffer allocation and
handling code is completely dead.

Change-Id: Id465012a7e607349401d554fc7a8e5db7e967998
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/205
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

diff --git a/src/jtag/drivers/bitq.c b/src/jtag/drivers/bitq.c
index 46eb27ae98cdf4c5a3ca77e1aa070a780e0aa67c..4e2dbc21c3fb21ca5f60801890b003aba9470d41 100644 (file)
--- a/src/jtag/drivers/bitq.c
+++ b/src/jtag/drivers/bitq.c
@@ -37,12 +37,8 @@ struct bitq_state {
 };
 static struct bitq_state bitq_in_state;
 
-static uint8_t* bitq_in_buffer;                     /* buffer dynamically reallocated as needed */
-static int     bitq_in_bufsize = 32; /* min. buffer size */
-
 /*
  * input queue processing does not use jtag_read_buffer() to avoid unnecessary overhead
- * also the buffer for incomming data is reallocated only if necessary
  * no parameters, makes use of stored state information
  */
 void bitq_in_proc(void)
@@ -72,32 +68,7 @@ void bitq_in_proc(void)
                                                /* initialize field scanning */
                                                in_mask = 0x01;
                                                in_idx  = 0;
-                                               if (field->in_value)
-                                                       in_buff = field->in_value;
-                                               else
-                                               {
-                                                       /* buffer reallocation needed? */
-                                                       if (field->num_bits > bitq_in_bufsize * 8)
-                                                       {
-                                                               /* buffer previously allocated? */
-                                                               if (bitq_in_buffer != NULL)
-                                                               {
-                                                                       /* free it */
-                                                                       free(bitq_in_buffer);
-                                                                       bitq_in_buffer = NULL;
-                                                               }
-                                                               /* double the buffer size until it fits */
-                                                               while (field->num_bits > bitq_in_bufsize * 8)
-                                                                       bitq_in_bufsize *= 2;
-                                                       }
-                                                       /* if necessary, allocate buffer and check for malloc error */
-                                                       if (bitq_in_buffer == NULL && (bitq_in_buffer = malloc(bitq_in_bufsize)) == NULL)
-                                                       {
-                                                               LOG_ERROR("malloc error");
-                                                               exit(-1);
-                                                       }
-                                                       in_buff = (void*) bitq_in_buffer;
-                                               }
+                                               in_buff = field->in_value;
                                        }
 
                                        /* field scanning */
@@ -390,9 +361,4 @@ int bitq_execute_queue(void)
 
 void bitq_cleanup(void)
 {
-       if (bitq_in_buffer != NULL)
-       {
-               free(bitq_in_buffer);
-               bitq_in_buffer = NULL;
-       }
 }