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Only cache LP5562 status on I2C transaction success

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If the I2C transaction fails, we shouldn't cache the status because that
status is not set correctly in LP5562.

BUG=chrome-os-partner:20020
TEST=Boot and check battery LED still works.
BRANCH=spring

Change-Id: I3f40c2d5c85db41e4ba4b80dc5252e5d86100823
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/58072
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vic Yang
2013-06-10 21:54:23 +08:00
committed by ChromeBot
parent 9b981bf1af
commit 465b59342a
1 changed files with 5 additions and 3 deletions
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8
common/lp5562_battery_led.c
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@@ -111,6 +111,7 @@ static void battery_led_update(void)
{
int current;
int desired_current;
int rv;
enum led_state_t state = LED_STATE_OFF;
/* Current states and next states */
@@ -120,13 +121,14 @@ static void battery_led_update(void)
/* Determine LED power */
new_led_power = extpower_is_present();
if (new_led_power != led_power) {
led_power = new_led_power;
if (new_led_power) {
lp5562_poweron();
rv = lp5562_poweron();
} else {
lp5562_poweroff();
rv = lp5562_poweroff();
set_led_color(LED_STATE_OFF);
}
if (!rv)
led_power = new_led_power;
}
if (!new_led_power)
return;