From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Rework the power management part of the i2c-designware-platdrv driver
so that its ->suspend and ->resume callbacks do not point to the
callback routines used by it for runtime PM. Instead, point its late
suspend and early resume callbacks to pm_runtime_force_suspend() and
pm_runtime_force_resume(), respectively, and make it set the
SAFE_SUSPEND driver flag (introduced earlier) to instruct the generic
ACPI PM domain code that the driver can cope with runtime suspended
devices in its system sleep callbacks.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
drivers/i2c/busses/i2c-designware-platdrv.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Index: linux-pm/drivers/i2c/busses/i2c-designware-platdrv.c
===================================================================
--- linux-pm.orig/drivers/i2c/busses/i2c-designware-platdrv.c
+++ linux-pm/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -358,6 +358,7 @@ static int dw_i2c_plat_probe(struct plat
if (dev->pm_disabled) {
pm_runtime_forbid(&pdev->dev);
} else {
+ dev->power.driver_flags = DPM_FLAG_SAFE_SUSPEND;
pm_runtime_set_autosuspend_delay(&pdev->dev, 1000);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
@@ -455,7 +456,8 @@ static int dw_i2c_plat_resume(struct dev
static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
.prepare = dw_i2c_plat_prepare,
.complete = dw_i2c_plat_complete,
- SET_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
SET_RUNTIME_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume, NULL)
};
--
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