mfd: cros_ec_i2c: Moving the system sleep pm ops to late
authorJoseph Lo <josephl@nvidia.com>
Wed, 18 Apr 2018 10:24:04 +0000 (12:24 +0200)
committerLee Jones <lee.jones@linaro.org>
Tue, 29 May 2018 08:11:12 +0000 (09:11 +0100)
The cros_ec_i2c driver is still active after it had suspended or before it
resumes. Besides that, it also tried to transfer data even after the I2C
host had been suspended. This will lead the system to crash.

During the test, we also observe that the EC needs to be resumed earlier
due to some status polling from the EC FW (e.g. battery status). So we
move the PM ops to late stage to make it work normally.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
drivers/mfd/cros_ec_i2c.c

index 02a7bacdc056b8ebfc20fb10bbfa18ecf94e557d..ef9b4763356ff2e5def8c8446fb12a874dd9e167 100644 (file)
@@ -342,8 +342,9 @@ static int cros_ec_i2c_resume(struct device *dev)
 }
 #endif
 
-static SIMPLE_DEV_PM_OPS(cros_ec_i2c_pm_ops, cros_ec_i2c_suspend,
-                         cros_ec_i2c_resume);
+static const struct dev_pm_ops cros_ec_i2c_pm_ops = {
+       SET_LATE_SYSTEM_SLEEP_PM_OPS(cros_ec_i2c_suspend, cros_ec_i2c_resume)
+};
 
 #ifdef CONFIG_OF
 static const struct of_device_id cros_ec_i2c_of_match[] = {