common: Fix sleep mask for multi-port lock.
This change use a simple counter to to prevent ec enter sleep if there's
any i2c port active. Once there's no i2c port active, we enable sleep bit of
i2c in i2c_lock() func. Please note FW disables interrupt during changing
counter to prevent preemptive conditions.
Modified sources:
1. common/i2c.c: Fix sleep mask for multi-port lock.
BUG=crbug.com/537759
TEST=make buildall -j; test on wheatley when CONFIG_LOW_POWER_S0 is deifned.
BRANCH=none
Change-Id: I17c226108fee0e5d656fa157808179898f9a8dbf
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/325256
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed
