[PATCH v2 33/45] mfd: rk808: Use devm_register_simple_power_off_handler()

Dmitry Osipenko
2021-10-27T21:24:03Z

Use devm_register_simple_power_off_handler() that replaces global
pm_power_off variable and allows to register multiple power-off handlers.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/mfd/rk808.c | 23 +++++++++++------------
1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c
index b181fe401330..3bf369469053 100644
--- a/drivers/mfd/rk808.c
+++ b/drivers/mfd/rk808.c
@@ -18,6 +18,7 @@
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/of_device.h>
+#include <linux/reboot.h>
#include <linux/regmap.h>

struct rk808_reg_data {
@@ -526,12 +527,11 @@ static const struct regmap_irq_chip rk818_irq_chip = {
.init_ack_masked = true,
};

-static struct i2c_client *rk808_i2c_client;
-
-static void rk808_pm_power_off(void)
+static void rk808_pm_power_off(void *data)
{
int ret;
unsigned int reg, bit;
+ struct i2c_client *rk808_i2c_client = data;
struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);

switch (rk808->variant) {
@@ -725,8 +725,14 @@ static int rk808_probe(struct i2c_client *client,
}

if (of_property_read_bool(np, "rockchip,system-power-controller")) {
- rk808_i2c_client = client;
- pm_power_off = rk808_pm_power_off;
+ ret = devm_register_simple_power_off_handler(&client->dev,
+ rk808_pm_power_off,
+ client);
+ if (ret) {
+ dev_err(&client->dev,
+ "failed to register power-off handler %d\n", ret);
+ goto err_irq;
+ }
}

return 0;
@@ -742,13 +748,6 @@ static int rk808_remove(struct i2c_client *client)

regmap_del_irq_chip(client->irq, rk808->irq_data);

- /**
- * pm_power_off may points to a function from another module.
- * Check if the pointer is set by us and only then overwrite it.
- */
- if (pm_power_off == rk808_pm_power_off)
- pm_power_off = NULL;
-
return 0;
}

--
2.33.1