altos/lpc: Don't disable all interrupts when disabling one interrupt
authorKeith Packard <keithp@keithp.com>
Sat, 22 Jun 2013 02:40:59 +0000 (19:40 -0700)
committerKeith Packard <keithp@keithp.com>
Sat, 22 Jun 2013 07:49:59 +0000 (00:49 -0700)
commit58eda6f873f5d6e8e219f769bdf67ce4dbc96fd7
tree9c603eb0411441d455c3c97b6fe4458a296a669e
parent9081d881bc48bf7fdce617d300ac02c1a5962239
altos/lpc: Don't disable all interrupts when disabling one interrupt

The nvic iser and icer registers read value indicates all enabled
interrupts, icer writes disable the set interrupts. Re-writing icer
with the current value ends up disabling all interrupts, not exactly
what we wanted.

Signed-off-by: Keith Packard <keithp@keithp.com>
src/lpc/lpc.h