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power: vm_bms: avoid a race condition in the calculate_reported_soc 

When the charging is ended, the last_soc may be set to invalid for
a while. Add a check and do not calculate the reported soc if the
last_soc value is invalid.

Change-Id: Ia6987098dee5447c6852a276491930ddfbaa062e
CRs-Fixed: 848209
Signed-off-by: Jie Cheng <rockiec@codeaurora.org>
This commit is contained in:
Jie Cheng 2015-06-04 12:50:34 +08:00
parent a8d322f1ea
commit 987954e18e
1 changed files with 5 additions and 0 deletions
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5
drivers/power/qpnp-vm-bms.c
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@ -1974,6 +1974,11 @@ static void calculate_reported_soc(struct qpnp_bms_chip *chip)
{
union power_supply_propval ret = {0,};
if (chip->last_soc < 0) {
pr_debug("last_soc is not ready, return\n");
return;
}
if (chip->reported_soc > chip->last_soc) {
/*send DISCHARGING status if the reported_soc drops from 100 */
if (chip->reported_soc == 100) {