[PATCH] ACPI: PM: Emit debug messages when enabling/disabling wakeup power
From: Rafael J. Wysocki <hidden>
Date: 2021-11-16 20:06:26
Also in:
linux-acpi, lkml
From: Rafael J. Wysocki <redacted> Print additional debug messages when enabling and disabling wakeup power for an ACPI device object to facilitate more fine-grained debugging of problems in that area. Signed-off-by: Rafael J. Wysocki <redacted> --- drivers/acpi/power.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) Index: linux-pm/drivers/acpi/power.c ===================================================================
--- linux-pm.orig/drivers/acpi/power.c
+++ linux-pm/drivers/acpi/power.c@@ -716,6 +716,9 @@ int acpi_enable_wakeup_device_power(stru mutex_lock(&acpi_device_lock); + dev_dbg(&dev->dev, "Enabling wakeup power (count %d)\n", + dev->wakeup.prepare_count); + if (dev->wakeup.prepare_count++) goto out;
@@ -734,8 +737,11 @@ int acpi_enable_wakeup_device_power(stru if (err) { acpi_power_off_list(&dev->wakeup.resources); dev->wakeup.prepare_count = 0; + goto out; } + dev_dbg(&dev->dev, "Wakeup power enabled\n"); + out: mutex_unlock(&acpi_device_lock); return err;
@@ -757,6 +763,9 @@ int acpi_disable_wakeup_device_power(str mutex_lock(&acpi_device_lock); + dev_dbg(&dev->dev, "Disabling wakeup power (count %d)\n", + dev->wakeup.prepare_count); + /* Do nothing if wakeup power has not been enabled for this device. */ if (dev->wakeup.prepare_count <= 0) goto out;
@@ -782,8 +791,11 @@ int acpi_disable_wakeup_device_power(str if (err) { dev_err(&dev->dev, "Cannot turn off wakeup power resources\n"); dev->wakeup.flags.valid = 0; + goto out; } + dev_dbg(&dev->dev, "Wakeup power disabled\n"); + out: mutex_unlock(&acpi_device_lock); return err;