Commit 63a1a765 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

ACPI / PM: Fix error messages in drivers/acpi/bus.c 



After recent changes of the ACPI device low-power states definitions
kernel messages in drivers/acpi/bus.c need to be updated so that they
include the correct names of the states in question (currently is
"D3" for D3hot and "D4" for D3cold, which is incorrect).

Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent b2201e54

drivers/acpi/bus.c

+28 −9
Original line number Diff line number Diff line
@@ -182,6 +182,24 @@ EXPORT_SYMBOL(acpi_bus_get_private_data); 
                                 Power Management

   -------------------------------------------------------------------------- */



static const char *state_string(int state)

{

	switch (state) {

	case ACPI_STATE_D0:

		return "D0";

	case ACPI_STATE_D1:

		return "D1";

	case ACPI_STATE_D2:

		return "D2";

	case ACPI_STATE_D3_HOT:

		return "D3hot";

	case ACPI_STATE_D3_COLD:

		return "D3";

	default:

		return "(unknown)";

	}

}



static int __acpi_bus_get_power(struct acpi_device *device, int *state)

{

	int result = 0;
@@ -215,8 +233,8 @@ static int __acpi_bus_get_power(struct acpi_device *device, int *state) 
			device->parent->power.state : ACPI_STATE_D0;

	}



	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n",

			  device->pnp.bus_id, *state));

	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is %s\n",

			  device->pnp.bus_id, state_string(*state)));



	return 0;

}
@@ -234,13 +252,14 @@ static int __acpi_bus_set_power(struct acpi_device *device, int state) 
	/* Make sure this is a valid target state */



	if (state == device->power.state) {

		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",

				  state));

		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at %s\n",

				  state_string(state)));

		return 0;

	}



	if (!device->power.states[state].flags.valid) {

		printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);

		printk(KERN_WARNING PREFIX "Device does not support %s\n",

		       state_string(state));

		return -ENODEV;

	}

	if (device->parent && (state < device->parent->power.state)) {
@@ -294,13 +313,13 @@ static int __acpi_bus_set_power(struct acpi_device *device, int state) 
      end:

	if (result)

		printk(KERN_WARNING PREFIX

			      "Device [%s] failed to transition to D%d\n",

			      device->pnp.bus_id, state);

			      "Device [%s] failed to transition to %s\n",

			      device->pnp.bus_id, state_string(state));

	else {

		device->power.state = state;

		ACPI_DEBUG_PRINT((ACPI_DB_INFO,

				  "Device [%s] transitioned to D%d\n",

				  device->pnp.bus_id, state));

				  "Device [%s] transitioned to %s\n",

				  device->pnp.bus_id, state_string(state)));

	}



	return result;

CRA Git | Maintained and supported by SUSTech CRA and CCSE