sysfsgpio: do not try to initialise absent signals 75/1375/2
authorPaul Fertser <fercerpav@gmail.com>
Fri, 3 May 2013 08:49:07 +0000 (12:49 +0400)
committerFreddie Chopin <freddie.chopin@gmail.com>
Wed, 8 May 2013 14:53:36 +0000 (14:53 +0000)
commit80a6d617813807814784316870e8c0e8ba3abce3
tree51ae4e299f38046c1efb3d0f49b9bd8a0e2fce03
parent2a864a89c8296d67587b93a58996615e74fe9c31
sysfsgpio: do not try to initialise absent signals

When e.g. SRST is not specified, the current code results in assigning 0 to
srst_fd and subsequently a stray '1' is output on screen on reset.

Avoid this by not doing bogus initialisation.

Change-Id: Iadb847a384a927ae746124cf6e4e3c6cc8b11406
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/1375
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
src/jtag/drivers/sysfsgpio.c