diff --git a/drivers/misc/lis3lv02d/lis3lv02d.h b/drivers/misc/lis3lv02d/lis3lv02d.h index c394c0b08519..7ac788fae1b8 100644 --- a/drivers/misc/lis3lv02d/lis3lv02d.h +++ b/drivers/misc/lis3lv02d/lis3lv02d.h @@ -271,6 +271,7 @@ struct lis3lv02d { int regs_size; u8 *reg_cache; bool regs_stored; + bool init_required; u8 odr_mask; /* ODR bit mask */ u8 whoami; /* indicates measurement precision */ s16 (*read_data) (struct lis3lv02d *lis3, int reg); diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c index 799cbe2ffcf3..8c0867bda828 100644 --- a/drivers/platform/x86/hp_accel.c +++ b/drivers/platform/x86/hp_accel.c @@ -88,6 +88,9 @@ MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids); static int lis3lv02d_acpi_init(struct lis3lv02d *lis3) { struct acpi_device *dev = lis3->bus_priv; + if (!lis3->init_required) + return 0; + if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI, NULL, NULL) != AE_OK) return -EINVAL; @@ -356,6 +359,7 @@ static int lis3lv02d_add(struct acpi_device *device) } /* call the core layer do its init */ + lis3_dev.init_required = true; ret = lis3lv02d_init_device(&lis3_dev); if (ret) return ret; @@ -403,11 +407,27 @@ static int lis3lv02d_suspend(struct device *dev) static int lis3lv02d_resume(struct device *dev) { + lis3_dev.init_required = false; lis3lv02d_poweron(&lis3_dev); return 0; } -static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume); +static int lis3lv02d_restore(struct device *dev) +{ + lis3_dev.init_required = true; + lis3lv02d_poweron(&lis3_dev); + return 0; +} + +static const struct dev_pm_ops hp_accel_pm = { + .suspend = lis3lv02d_suspend, + .resume = lis3lv02d_resume, + .freeze = lis3lv02d_suspend, + .thaw = lis3lv02d_resume, + .poweroff = lis3lv02d_suspend, + .restore = lis3lv02d_restore, +}; + #define HP_ACCEL_PM (&hp_accel_pm) #else #define HP_ACCEL_PM NULL