linux-kernel - [PATCH v2 37/45] mfd: tps65910: Use devm_register_simple_power_off

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Message-Id: <20211027211715.12671-38-digetx@gmail.com>
Date:   Thu, 28 Oct 2021 00:17:07 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Lee Jones <lee.jones@...aro.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Russell King <linux@...linux.org.uk>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Guo Ren <guoren@...nel.org>,
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Subject: [PATCH v2 37/45] mfd: tps65910: Use devm_register_simple_power_off_handler()

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@...il.com>
---
 drivers/mfd/tps65910.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
index 6e105cca27d4..8fab30dc84e5 100644
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -16,6 +16,7 @@
 #include <linux/irq.h>
 #include <linux/irqdomain.h>
 #include <linux/mfd/core.h>
+#include <linux/reboot.h>
 #include <linux/regmap.h>
 #include <linux/mfd/tps65910.h>
 #include <linux/of.h>
@@ -429,9 +430,9 @@ struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
 }
 #endif
 
-static struct i2c_client *tps65910_i2c_client;
-static void tps65910_power_off(void)
+static void tps65910_power_off(void *data)
 {
+	struct i2c_client *tps65910_i2c_client = data;
 	struct tps65910 *tps65910;
 
 	tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev);
@@ -503,9 +504,15 @@ static int tps65910_i2c_probe(struct i2c_client *i2c,
 	tps65910_ck32k_init(tps65910, pmic_plat_data);
 	tps65910_sleepinit(tps65910, pmic_plat_data);
 
-	if (pmic_plat_data->pm_off && !pm_power_off) {
-		tps65910_i2c_client = i2c;
-		pm_power_off = tps65910_power_off;
+	if (pmic_plat_data->pm_off) {
+		ret = devm_register_simple_power_off_handler(&i2c->dev,
+							     tps65910_power_off,
+							     i2c);
+		if (ret) {
+			dev_err(&i2c->dev,
+				"failed to register power-off handler: %d\n", ret);
+			return ret;
+		}
 	}
 
 	ret = devm_mfd_add_devices(tps65910->dev, -1,
-- 
2.33.1