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authorRoman Reichel <romanreichel@aol.de>2013-01-15 23:13:08 +0100
committerSpencer Oliver <spen@spen-soft.co.uk>2013-01-16 11:21:49 +0000
commitdf7a6b08a69cdf13d4a0adc9b6fc9e56cdcaa18e (patch)
tree40741fe515122c6f52bea7d43f43e20f18eccf2e /src/jtag
parent7ae9154846f6e268c4fbc0c237c1b2c6301da2ce (diff)
opendous: Inhibit unnecessary state transitions
When current tap state and end state are the same, transitions are added which is not what should happen. The usbprog driver was already patched like this long time ago. Change-Id: I339e87156bdc7b5c83c10c14025b749605d3871a Signed-off-by: Roman Reichel <romanreichel@aol.de> Reviewed-on: http://openocd.zylin.com/1113 Tested-by: jenkins Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Diffstat (limited to 'src/jtag')
-rw-r--r--src/jtag/drivers/opendous.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/jtag/drivers/opendous.c b/src/jtag/drivers/opendous.c
index 1b74bd5a..3a6cf5c6 100644
--- a/src/jtag/drivers/opendous.c
+++ b/src/jtag/drivers/opendous.c
@@ -422,7 +422,9 @@ void opendous_scan(int ir_scan, enum scan_type type, uint8_t *buffer, int scan_s
/* Move to appropriate scan state */
opendous_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
- opendous_state_move();
+ if (tap_get_state() != tap_get_end_state())
+ opendous_state_move();
+
opendous_end_state(saved_end_state);
/* Scan */