jtag: only change state if necessary14/1114/2
authorSpencer Oliver <spen@spen-soft.co.uk>
Wed, 16 Jan 2013 11:57:57 +0000 (11:57 +0000)
committerFreddie Chopin <freddie.chopin@gmail.com>
Sun, 27 Jan 2013 14:16:52 +0000 (14:16 +0000)
commitf54a639b28514bf8c8faabc39c6434db1e886fed
tree92302e84b66e3c8d69db432e51a8d4df1e2cde77
parentf807d6ab3dc86cd258fb459546b52d9b07fe7986
jtag: only change state if necessary

All the other drivers will only change the state if required.
This brings all the other drivers inline with this behaviour.

The original issue relates to problems on xscale commit 7989000e0969c1ccf69acbc3ce649a020bc1ee66

Change-Id: Ifc90ec2eef68a70a14f37c00931a07982bfa200c
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1114
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
src/jtag/drivers/amt_jtagaccel.c
src/jtag/drivers/arm-jtag-ew.c
src/jtag/drivers/buspirate.c