[PATCH v3 1/5] ACPI: AC: Clean up printing messages

Rafael J. Wysocki
2021-02-03T18:52:38Z

From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Replace the ACPI_DEBUG_PRINT() and ACPI_EXCEPTION() instances
in ac.c with acpi_handle_debug() and acpi_handle_info() calls,
respectively, which among other things causes the excessive log
level of the messages previously printed via ACPI_EXCEPTION() to
be increased.

Drop the _COMPONENT and ACPI_MODULE_NAME() definitions that are not
used any more, drop the no longer needed ACPI_AC_COMPONENT definition
from the headers and update the documentation accordingly.

While at it, replace the direct printk() invocation with pr_info(),
add a pr_fmt() definition to ac.c and drop the unneeded PREFIX
symbol definition from there.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

v2 -> v3: Also add a pr_fmt() definition to ac.c and replace direct
printk() with pr_info (no log level change).

v1 -> v2: Changelog update.

---
Documentation/firmware-guide/acpi/debug.rst | 1 -
drivers/acpi/ac.c | 23 ++++++++++-------------
drivers/acpi/sysfs.c | 1 -
include/acpi/acpi_drivers.h | 1 -
4 files changed, 10 insertions(+), 16 deletions(-)

Index: linux-pm/Documentation/firmware-guide/acpi/debug.rst
===================================================================
--- linux-pm.orig/Documentation/firmware-guide/acpi/debug.rst
+++ linux-pm/Documentation/firmware-guide/acpi/debug.rst
@@ -52,7 +52,6 @@ shows the supported mask values, current
ACPI_CA_DISASSEMBLER 0x00000800
ACPI_COMPILER 0x00001000
ACPI_TOOLS 0x00002000
- ACPI_AC_COMPONENT 0x00020000
ACPI_BATTERY_COMPONENT 0x00040000
ACPI_BUTTON_COMPONENT 0x00080000
ACPI_SBS_COMPONENT 0x00100000
Index: linux-pm/drivers/acpi/ac.c
===================================================================
--- linux-pm.orig/drivers/acpi/ac.c
+++ linux-pm/drivers/acpi/ac.c
@@ -6,6 +6,8 @@
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
*/

+#define pr_fmt(fmt) "ACPI: AC: " fmt
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
@@ -18,8 +20,6 @@
#include <linux/acpi.h>
#include <acpi/battery.h>

-#define PREFIX "ACPI: "
-
#define ACPI_AC_CLASS "ac_adapter"
#define ACPI_AC_DEVICE_NAME "AC Adapter"
#define ACPI_AC_FILE_STATE "state"
@@ -28,9 +28,6 @@
#define ACPI_AC_STATUS_ONLINE 0x01
#define ACPI_AC_STATUS_UNKNOWN 0xFF

-#define _COMPONENT ACPI_AC_COMPONENT
-ACPI_MODULE_NAME("ac");
-
MODULE_AUTHOR("Paul Diefenbaugh");
MODULE_DESCRIPTION("ACPI AC Adapter Driver");
MODULE_LICENSE("GPL");
@@ -102,8 +99,9 @@ static int acpi_ac_get_state(struct acpi
status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL,
&ac->state);
if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "Error reading AC Adapter state"));
+ acpi_handle_info(ac->device->handle,
+ "Error reading AC Adapter state: %s\n",
+ acpi_format_exception(status));
ac->state = ACPI_AC_STATUS_UNKNOWN;
return -ENODEV;
}
@@ -153,8 +151,8 @@ static void acpi_ac_notify(struct acpi_d

switch (event) {
default:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Unsupported event [0x%x]\n", event));
+ acpi_handle_debug(device->handle, "Unsupported event [0x%x]\n",
+ event);
fallthrough;
case ACPI_AC_NOTIFY_STATUS:
case ACPI_NOTIFY_BUS_CHECK:
@@ -278,9 +276,8 @@ static int acpi_ac_add(struct acpi_devic
goto end;
}

- printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
- acpi_device_name(device), acpi_device_bid(device),
- ac->state ? "on-line" : "off-line");
+ pr_info("%s [%s] (%s)\n", acpi_device_name(device),
+ acpi_device_bid(device), ac->state ? "on-line" : "off-line");

ac->battery_nb.notifier_call = acpi_ac_battery_notify;
register_acpi_notifier(&ac->battery_nb);
@@ -348,7 +345,7 @@ static int __init acpi_ac_init(void)
for (i = 0; i < ARRAY_SIZE(acpi_ac_blacklist); i++)
if (acpi_dev_present(acpi_ac_blacklist[i].hid, "1",
acpi_ac_blacklist[i].hrv)) {
- pr_info(PREFIX "AC: found native %s PMIC, not loading\n",
+ pr_info("found native %s PMIC, not loading\n",
acpi_ac_blacklist[i].hid);
return -ENODEV;
}
Index: linux-pm/drivers/acpi/sysfs.c
===================================================================
--- linux-pm.orig/drivers/acpi/sysfs.c
+++ linux-pm/drivers/acpi/sysfs.c
@@ -52,7 +52,6 @@ static const struct acpi_dlayer acpi_deb
ACPI_DEBUG_INIT(ACPI_COMPILER),
ACPI_DEBUG_INIT(ACPI_TOOLS),

- ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
Index: linux-pm/include/acpi/acpi_drivers.h
===================================================================
--- linux-pm.orig/include/acpi/acpi_drivers.h
+++ linux-pm/include/acpi/acpi_drivers.h
@@ -15,7 +15,6 @@
* Please update drivers/acpi/debug.c and Documentation/firmware-guide/acpi/debug.rst
* if you add to this list.
*/
-#define ACPI_AC_COMPONENT 0x00020000
#define ACPI_BATTERY_COMPONENT 0x00040000
#define ACPI_BUTTON_COMPONENT 0x00080000
#define ACPI_SBS_COMPONENT 0x00100000