ft2232: warn about lack of TRST on "turtle" adapter

This patch fixes a build error (assigning a variable to itself) with
clang.

Since this adapter lacks trst, trying to use it in reset_config will
fail silently. Warn the user accordingly.

Change-Id: I16fd20936f00d7ff82962f4fcc629ff434aa4dce
Reported-by: Rainer Müller <raimue@codingfarm.de>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/1946
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

diff --git a/src/jtag/drivers/ft2232.c b/src/jtag/drivers/ft2232.c
index e07e5130a51a0fe791d5849609cf3f05851054e5..c4a74ef7f38de2171336214131762d7a34cf5840 100644 (file)
--- a/src/jtag/drivers/ft2232.c
+++ b/src/jtag/drivers/ft2232.c
@@ -1511,7 +1511,8 @@ static void minimodule_reset(int trst, int srst)
 
 static void turtle_reset(int trst, int srst)
 {
-       trst = trst;
+       if (trst == 1)
+               LOG_ERROR("Can't assert TRST: the adapter lacks this signal");
 
        if (srst == 1)
                low_output |= nSRST;