PCI: acpiphp: Convert to dynamic debug

This patch is to use pr_debug/info/warn/err to replace acpiphp debug
functions and remove module's debug param.

User interface change: before this patch, boot with the "acpiphp.debug"
kernel parameter to turn on debug.  After this patch, set
CONFIG_DYNAMIC_DEBUG=y and boot with "acpiphp.dyndebug=+p" instead.
See Documentation/dynamic-debug-howto.txt.

[bhelgaas: changelog]
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 18 insertions, 19 deletions

diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index bf2203ef1308..8650d39db392 100644
--- a/drivers/pci/hotplug/acpiphp_core.c
+++ b/drivers/pci/hotplug/acpiphp_core.c
@@ -31,6 +31,8 @@
  *
  */
 
+#define pr_fmt(fmt) "acpiphp: " fmt
+
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
@@ -43,12 +45,9 @@
 #include <linux/smp.h>
 #include "acpiphp.h"
 
-#define MY_NAME	"acpiphp"
-
 /* name size which is used for entries in pcihpfs */
 #define SLOT_NAME_SIZE  21              /* {_SUN} */
 
-bool acpiphp_debug;
 bool acpiphp_disabled;
 
 /* local variables */
@@ -61,9 +60,7 @@ static struct acpiphp_attention_info *attention_info;
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
-MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
 MODULE_PARM_DESC(disable, "disable acpiphp driver");
-module_param_named(debug, acpiphp_debug, bool, 0644);
 module_param_named(disable, acpiphp_disabled, bool, 0444);
 
 /* export the attention callback registration methods */
@@ -139,7 +136,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
 
 	/* enable the specified slot */
 	return acpiphp_enable_slot(slot->acpi_slot);
@@ -156,7 +153,7 @@ static int disable_slot(struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
 
 	/* disable the specified slot */
 	return acpiphp_disable_and_eject_slot(slot->acpi_slot);
@@ -176,8 +173,9 @@ static int disable_slot(struct hotplug_slot *hotplug_slot)
  {
 	int retval = -ENODEV;
 
-	dbg("%s - physical_slot = %s\n", __func__, hotplug_slot_name(hotplug_slot));
- 
+	pr_debug("%s - physical_slot = %s\n", __func__,
+		hotplug_slot_name(hotplug_slot));
+
 	if (attention_info && try_module_get(attention_info->owner)) {
 		retval = attention_info->set_attn(hotplug_slot, status);
 		module_put(attention_info->owner);
@@ -199,7 +197,7 @@ static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
 
 	*value = acpiphp_get_power_status(slot->acpi_slot);
 
@@ -221,7 +219,8 @@ static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
 {
 	int retval = -EINVAL;
 
-	dbg("%s - physical_slot = %s\n", __func__, hotplug_slot_name(hotplug_slot));
+	pr_debug("%s - physical_slot = %s\n", __func__,
+		hotplug_slot_name(hotplug_slot));
 
 	if (attention_info && try_module_get(attention_info->owner)) {
 		retval = attention_info->get_attn(hotplug_slot, value);
@@ -244,7 +243,7 @@ static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
 
 	*value = acpiphp_get_latch_status(slot->acpi_slot);
 
@@ -264,7 +263,7 @@ static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
 
 	*value = acpiphp_get_adapter_status(slot->acpi_slot);
 
@@ -279,7 +278,7 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot));
 
 	kfree(slot->hotplug_slot);
 	kfree(slot);
@@ -322,11 +321,11 @@ int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot,
 	if (retval == -EBUSY)
 		goto error_hpslot;
 	if (retval) {
-		err("pci_hp_register failed with error %d\n", retval);
+		pr_err("pci_hp_register failed with error %d\n", retval);
 		goto error_hpslot;
  	}
 
-	info("Slot [%s] registered\n", slot_name(slot));
+	pr_info("Slot [%s] registered\n", slot_name(slot));
 
 	return 0;
 error_hpslot:
@@ -343,17 +342,17 @@ void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
 	struct slot *slot = acpiphp_slot->slot;
 	int retval = 0;
 
-	info("Slot [%s] unregistered\n", slot_name(slot));
+	pr_info("Slot [%s] unregistered\n", slot_name(slot));
 
 	retval = pci_hp_deregister(slot->hotplug_slot);
 	if (retval)
-		err("pci_hp_deregister failed with error %d\n", retval);
+		pr_err("pci_hp_deregister failed with error %d\n", retval);
 }
 
 
 void __init acpiphp_init(void)
 {
-	info(DRIVER_DESC " version: " DRIVER_VERSION "%s\n",
+	pr_info(DRIVER_DESC " version: " DRIVER_VERSION "%s\n",
 		acpiphp_disabled ? ", disabled by user; please report a bug"
 				 : "");
 }