linux-kernel - [PATCH v2 40/45] mfd: twl4030: Use devm_register_trivial_power_off

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Date:   Thu, 28 Oct 2021 00:17:10 +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>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greg Ungerer <gerg@...ux-m68k.org>,
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Subject: [PATCH v2 40/45] mfd: twl4030: Use devm_register_trivial_power_off_handler()

Use devm_register_trivial_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/twl4030-power.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c
index 6b36932263ba..72df4735d628 100644
--- a/drivers/mfd/twl4030-power.c
+++ b/drivers/mfd/twl4030-power.c
@@ -29,6 +29,7 @@
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/reboot.h>
 
 #include <asm/mach-types.h>
 
@@ -923,7 +924,7 @@ static int twl4030_power_probe(struct platform_device *pdev)
 	}
 
 	/* Board has to be wired properly to use this feature */
-	if (twl4030_power_use_poweroff(pdata, node) && !pm_power_off) {
+	if (twl4030_power_use_poweroff(pdata, node)) {
 		/* Default for SEQ_OFFSYNC is set, lets ensure this */
 		err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
 				      TWL4030_PM_MASTER_CFG_P123_TRANSITION);
@@ -939,7 +940,12 @@ static int twl4030_power_probe(struct platform_device *pdev)
 			}
 		}
 
-		pm_power_off = twl4030_power_off;
+		err = devm_register_trivial_power_off_handler(&pdev->dev,
+							      twl4030_power_off);
+		if (err) {
+			dev_err(&pdev->dev, "Failed to register power-off handler\n");
+			goto relock;
+		}
 	}
 
 relock:
-- 
2.33.1