[PATCH 3/9] power: supply: smb347-charger: Use resource-managed API

David Heidelberg
2020-03-29T16:26:00Z

Simplify code, more convenient to use with Device Tree.

Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
---
drivers/power/supply/smb347-charger.c | 45 +++++++++++++--------------
1 file changed, 21 insertions(+), 24 deletions(-)

diff --git a/drivers/power/supply/smb347-charger.c b/drivers/power/supply/smb347-charger.c
index f99026d81f2a..4add9f64ba90 100644
--- a/drivers/power/supply/smb347-charger.c
+++ b/drivers/power/supply/smb347-charger.c
@@ -836,21 +836,31 @@ static int smb347_irq_init(struct smb347_charger *smb,
struct i2c_client *client)
{
const struct smb347_charger_platform_data *pdata = smb->pdata;
- int ret, irq = gpio_to_irq(pdata->irq_gpio);
+ unsigned long irqflags = IRQF_ONESHOT;
+ int ret;

- ret = gpio_request_one(pdata->irq_gpio, GPIOF_IN, client->name);
- if (ret < 0)
- goto fail;
+ /* Requesting GPIO for IRQ is only needed in non-DT way */
+ if (!client->irq) {
+ int irq = gpio_to_irq(pdata->irq_gpio);
+
+ ret = devm_gpio_request_one(smb->dev, pdata->irq_gpio,
+ GPIOF_IN, client->name);
+ if (ret < 0)
+ return ret;
+
+ irqflags |= IRQF_TRIGGER_FALLING;
+ client->irq = irq;
+ }

- ret = request_threaded_irq(irq, NULL, smb347_interrupt,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- client->name, smb);
+ ret = devm_request_threaded_irq(smb->dev, client->irq, NULL,
+ smb347_interrupt, irqflags,
+ client->name, smb);
if (ret < 0)
- goto fail_gpio;
+ return ret;

ret = smb347_set_writable(smb, true);
if (ret < 0)
- goto fail_irq;
+ return ret;

/*
* Configure the STAT output to be suitable for interrupts: disable
@@ -860,20 +870,10 @@ static int smb347_irq_init(struct smb347_charger *smb,
CFG_STAT_ACTIVE_HIGH | CFG_STAT_DISABLED,
CFG_STAT_DISABLED);
if (ret < 0)
- goto fail_readonly;
+ client->irq = 0;

smb347_set_writable(smb, false);
- client->irq = irq;
- return 0;

-fail_readonly:
- smb347_set_writable(smb, false);
-fail_irq:
- free_irq(irq, smb);
-fail_gpio:
- gpio_free(pdata->irq_gpio);
-fail:
- client->irq = 0;
return ret;
}

@@ -1299,11 +1299,8 @@ static int smb347_remove(struct i2c_client *client)
{
struct smb347_charger *smb = i2c_get_clientdata(client);

- if (client->irq) {
+ if (client->irq)
smb347_irq_disable(smb);
- free_irq(client->irq, smb);
- gpio_free(smb->pdata->irq_gpio);
- }

power_supply_unregister(smb->battery);
if (smb->pdata->use_usb)
--
2.25.0