From e06bf91b59d3d95359e046ffcdc577145933da10 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Wed, 11 Feb 2015 17:33:23 +0100
Subject: Revert "ACPI / EC: Add GPE reference counting debugging messages"

Revert commit b5bca896ef3c (ACPI / EC: Add GPE reference counting
debugging messages), because it depends on commit f252cb09e1cb
(ACPI / EC: Add query flushing support) which breaks system suspend
on Acer Aspire S5 and needs to be reverted.

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

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 14d0c89..40002ae 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -31,7 +31,6 @@
 
 /* Uncomment next line to get verbose printout */
 /* #define DEBUG */
-#define DEBUG_REF 0
 #define pr_fmt(fmt) "ACPI : EC: " fmt
 
 #include <linux/kernel.h>
@@ -91,13 +90,6 @@ enum {
 #define ACPI_EC_COMMAND_POLL		0x01 /* Available for command byte */
 #define ACPI_EC_COMMAND_COMPLETE	0x02 /* Completed last byte */
 
-#define ec_debug_ref(ec, fmt, ...)					\
-	do {								\
-		if (DEBUG_REF)						\
-			pr_debug("%lu: " fmt, ec->reference_count,	\
-				 ## __VA_ARGS__);			\
-	} while (0)
-
 /* ec.c is compiled in acpi namespace so this shows up as acpi.ec_delay param */
 static unsigned int ec_delay __read_mostly = ACPI_EC_DELAY;
 module_param(ec_delay, uint, 0644);
@@ -364,14 +356,12 @@ static void acpi_ec_submit_event(struct acpi_ec *ec)
 	/* Hold reference for pending event */
 	if (!acpi_ec_submit_flushable_request(ec, true))
 		return;
-	ec_debug_ref(ec, "Increase event\n");
 	if (!test_and_set_bit(EC_FLAGS_EVENT_PENDING, &ec->flags)) {
 		pr_debug("***** Event query started *****\n");
 		schedule_work(&ec->work);
 		return;
 	}
 	acpi_ec_complete_request(ec);
-	ec_debug_ref(ec, "Decrease event\n");
 }
 
 static void acpi_ec_complete_event(struct acpi_ec *ec)
@@ -381,7 +371,6 @@ static void acpi_ec_complete_event(struct acpi_ec *ec)
 		pr_debug("***** Event query stopped *****\n");
 		/* Unhold reference for pending event */
 		acpi_ec_complete_request(ec);
-		ec_debug_ref(ec, "Decrease event\n");
 		/* Check if there is another SCI_EVT detected */
 		acpi_ec_submit_event(ec);
 	}
@@ -392,14 +381,12 @@ static void acpi_ec_submit_detection(struct acpi_ec *ec)
 	/* Hold reference for query submission */
 	if (!acpi_ec_submit_flushable_request(ec, false))
 		return;
-	ec_debug_ref(ec, "Increase query\n");
 	if (!test_and_set_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags)) {
 		pr_debug("***** Event detection blocked *****\n");
 		acpi_ec_submit_event(ec);
 		return;
 	}
 	acpi_ec_complete_request(ec);
-	ec_debug_ref(ec, "Decrease query\n");
 }
 
 static void acpi_ec_complete_detection(struct acpi_ec *ec)
@@ -409,7 +396,6 @@ static void acpi_ec_complete_detection(struct acpi_ec *ec)
 		pr_debug("***** Event detetion unblocked *****\n");
 		/* Unhold reference for query submission */
 		acpi_ec_complete_request(ec);
-		ec_debug_ref(ec, "Decrease query\n");
 	}
 }
 
@@ -584,7 +570,6 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
 		ret = -EINVAL;
 		goto unlock;
 	}
-	ec_debug_ref(ec, "Increase command\n");
 	/* following two actions should be kept atomic */
 	ec->curr = t;
 	pr_debug("***** Command(%s) started *****\n",
@@ -600,7 +585,6 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
 	ec->curr = NULL;
 	/* Disable GPE for command processing (IBF=0/OBF=1) */
 	acpi_ec_complete_request(ec);
-	ec_debug_ref(ec, "Decrease command\n");
 unlock:
 	spin_unlock_irqrestore(&ec->lock, tmp);
 	return ret;
@@ -762,10 +746,8 @@ static void acpi_ec_start(struct acpi_ec *ec, bool resuming)
 	if (!test_and_set_bit(EC_FLAGS_STARTED, &ec->flags)) {
 		pr_debug("+++++ Starting EC +++++\n");
 		/* Enable GPE for event processing (SCI_EVT=1) */
-		if (!resuming) {
+		if (!resuming)
 			acpi_ec_submit_request(ec);
-			ec_debug_ref(ec, "Increase driver\n");
-		}
 		pr_info("+++++ EC started +++++\n");
 	}
 	spin_unlock_irqrestore(&ec->lock, flags);
@@ -794,10 +776,8 @@ static void acpi_ec_stop(struct acpi_ec *ec, bool suspending)
 		wait_event(ec->wait, acpi_ec_stopped(ec));
 		spin_lock_irqsave(&ec->lock, flags);
 		/* Disable GPE for event processing (SCI_EVT=1) */
-		if (!suspending) {
+		if (!suspending)
 			acpi_ec_complete_request(ec);
-			ec_debug_ref(ec, "Decrease driver\n");
-		}
 		clear_bit(EC_FLAGS_STARTED, &ec->flags);
 		clear_bit(EC_FLAGS_STOPPED, &ec->flags);
 		pr_info("+++++ EC stopped +++++\n");
-- 
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