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charging: add mutex lock init

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some time unit trigger kernel panic, optimize mutex lock
and add mutex lock init.

Change-Id: Ic4f670e91f2d3987b1623f47e6c1154d829c8fed
Signed-off-by: mahj8 <mahj8@motorola.com>
Reviewed-on: https://gerrit.mot.com/2164439
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
mahj8 2022-01-07 10:50:56 +08:00 • committed by Haijian Ma
commit 23c6b453f5
1 changed files with 7 additions and 3 deletions
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10
drivers/power/bq2589x_chg_mmi/bq2589x_charger.c
View file

@ -147,7 +147,7 @@ struct bq2589x {
struct device *dev;
struct i2c_client *client;
struct regulator *dpdm_reg;
struct mutex dpdm_lock;
struct mutex regulator_lock;
struct bq2589x_state state;
struct mutex lock;
@ -1478,6 +1478,7 @@ static bq2589x_reuqest_dpdm(struct bq2589x *bq, bool enable)
{
int ret = 0;
mutex_lock(&bq->regulator_lock);
/* fetch the DPDM regulator */
if (!bq->dpdm_reg && of_get_property(bq->dev->of_node, "dpdm-supply", NULL)) {
bq->dpdm_reg = devm_regulator_get(bq->dev, "dpdm");
@ -1485,11 +1486,12 @@ static bq2589x_reuqest_dpdm(struct bq2589x *bq, bool enable)
ret = PTR_ERR(bq->dpdm_reg);
dev_err(bq->dev, "Couldn't get dpdm regulator ret=%d\n", ret);
bq->dpdm_reg = NULL;
mutex_unlock(&bq->regulator_lock);
return ret;
}
}
mutex_lock(&bq->dpdm_lock);
if (enable) {
if (bq->dpdm_reg && !bq->dpdm_enabled) {
dev_err(bq->dev, "enabling DPDM regulator\n");
@ -1509,7 +1511,7 @@ static bq2589x_reuqest_dpdm(struct bq2589x *bq, bool enable)
bq->dpdm_enabled = false;
}
}
mutex_unlock(&bq->dpdm_lock);
mutex_unlock(&bq->regulator_lock);
return ret;
}
@ -2651,6 +2653,8 @@ static int bq2589x_charger_probe(struct i2c_client *client,
g_bq = bq;
mutex_init(&bq->lock);
mutex_init(&bq->regulator_lock);
sema_init(&bq->sem_dpdm, 1);
if (client->dev.of_node)