buspirate: add missing error propagation

found by clang.

Change-Id: I80ea8e6afc8dcc1aa7edb6f63af0d94f6781b81c
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Reviewed-on: http://openocd.zylin.com/182
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

diff --git a/src/jtag/drivers/buspirate.c b/src/jtag/drivers/buspirate.c
index 3a368ebbfadc3e115bb9d425d16ebacb237ad364..41e3e19412366ccb7514350c612439623203a53c 100644 (file)
--- a/src/jtag/drivers/buspirate.c
+++ b/src/jtag/drivers/buspirate.c
@@ -608,6 +608,10 @@ static int buspirate_tap_execute(void)
        }
 
        ret = buspirate_serial_read(buspirate_fd, tmp, bytes_to_send + 3);
+       if (ret != bytes_to_send + 3) {
+               LOG_ERROR("error reading");
+               return ERROR_FAIL;
+       }
        in_buf = (uint8_t *)(&tmp[3]);
 
        /* parse the scans */
@@ -743,6 +747,10 @@ static void buspirate_jtag_enable(int fd)
                                cmd_sent = 1;
                                tmp[0] = CMD_ENTER_OOCD;
                                ret = buspirate_serial_write(fd, tmp, 1);
+                               if (ret != 1) {
+                                       LOG_ERROR("error reading");
+                                       exit(-1);
+                               }
                        }
                } else if (strncmp(tmp, "OCD1", 4) == 0)
                        done = 1;