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authorAkinobu Mita <akinobu.mita@gmail.com>2020-01-20 16:32:24 +0100
committerGuenter Roeck <linux@roeck-us.net>2020-01-23 22:15:11 +0100
commit7992db7cb9d133bc6d3d1731fcd72fe2bec944d4 (patch)
treebced020e2e4b8dd7535bc82869f7236dfc76da73 /drivers
parentMAINTAINERS: add entry for ADM1177 driver (diff)
downloadlinux-7992db7cb9d133bc6d3d1731fcd72fe2bec944d4.tar.xz
linux-7992db7cb9d133bc6d3d1731fcd72fe2bec944d4.zip
hwmon: (pwm-fan) stop fan on shutdown
The pwm-fan driver stops the fan in suspend but leaves the fan on in shutdown. It seems strange to leave the fan on in shutdown because there is no use case in my mind and the gpio-fan driver on the other hand stops in shutdown. This change turns off the fan in shutdown. If anyone complains then we'll add an optional property to switch the behavior. Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Kamil Debski <kamil@wypas.org> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Link: https://lore.kernel.org/r/1579534344-11694-1-git-send-email-akinobu.mita@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hwmon/pwm-fan.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c
index 42ffd2e5182d..30b7b3ea8836 100644
--- a/drivers/hwmon/pwm-fan.c
+++ b/drivers/hwmon/pwm-fan.c
@@ -390,8 +390,7 @@ static int pwm_fan_probe(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_PM_SLEEP
-static int pwm_fan_suspend(struct device *dev)
+static int pwm_fan_disable(struct device *dev)
{
struct pwm_fan_ctx *ctx = dev_get_drvdata(dev);
struct pwm_args args;
@@ -418,6 +417,17 @@ static int pwm_fan_suspend(struct device *dev)
return 0;
}
+static void pwm_fan_shutdown(struct platform_device *pdev)
+{
+ pwm_fan_disable(&pdev->dev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int pwm_fan_suspend(struct device *dev)
+{
+ return pwm_fan_disable(dev);
+}
+
static int pwm_fan_resume(struct device *dev)
{
struct pwm_fan_ctx *ctx = dev_get_drvdata(dev);
@@ -455,6 +465,7 @@ MODULE_DEVICE_TABLE(of, of_pwm_fan_match);
static struct platform_driver pwm_fan_driver = {
.probe = pwm_fan_probe,
+ .shutdown = pwm_fan_shutdown,
.driver = {
.name = "pwm-fan",
.pm = &pwm_fan_pm,