linux-kernel - [PATCH RT 3/4] acpi-gpe-use-wait-simple.patch

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Date:	Tue, 17 Jan 2012 22:45:34 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	linux-kernel@...r.kernel.org,
	linux-rt-users <linux-rt-users@...r.kernel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Carsten Emde <C.Emde@...dl.org>, John Kacur <jkacur@...hat.com>
Subject: [PATCH RT 3/4] acpi-gpe-use-wait-simple.patch

From: Thomas Gleixner <tglx@...utronix.de>

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
 drivers/acpi/ec.c       |    8 ++++----
 drivers/acpi/internal.h |    4 +++-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 5812e01..db0e6c3 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -222,7 +222,7 @@ static int ec_poll(struct acpi_ec *ec)
 				if (ec_transaction_done(ec))
 					return 0;
 			} else {
-				if (wait_event_timeout(ec->wait,
+				if (swait_event_timeout(ec->wait,
 						ec_transaction_done(ec),
 						msecs_to_jiffies(1)))
 					return 0;
@@ -272,7 +272,7 @@ static int ec_wait_ibf0(struct acpi_ec *ec)
 	unsigned long delay = jiffies + msecs_to_jiffies(ec_delay);
 	/* interrupt wait manually if GPE mode is not active */
 	while (time_before(jiffies, delay))
-		if (wait_event_timeout(ec->wait, ec_check_ibf0(ec),
+		if (swait_event_timeout(ec->wait, ec_check_ibf0(ec),
 					msecs_to_jiffies(1)))
 			return 0;
 	return -ETIME;
@@ -612,7 +612,7 @@ static u32 acpi_ec_gpe_handler(acpi_handle gpe_device,
 	advance_transaction(ec, acpi_ec_read_status(ec));
 	if (ec_transaction_done(ec) &&
 	    (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) == 0) {
-		wake_up(&ec->wait);
+		swait_wake(&ec->wait);
 		ec_check_sci(ec, acpi_ec_read_status(ec));
 	}
 	return ACPI_INTERRUPT_HANDLED | ACPI_REENABLE_GPE;
@@ -676,7 +676,7 @@ static struct acpi_ec *make_acpi_ec(void)
 		return NULL;
 	ec->flags = 1 << EC_FLAGS_QUERY_PENDING;
 	mutex_init(&ec->lock);
-	init_waitqueue_head(&ec->wait);
+	init_swait_head(&ec->wait);
 	INIT_LIST_HEAD(&ec->list);
 	raw_spin_lock_init(&ec->curr_lock);
 	return ec;
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 68ed95f..2519b6e 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -23,6 +23,8 @@
 
 #define PREFIX "ACPI: "
 
+#include <linux/wait-simple.h>
+
 int init_acpi_device_notify(void);
 int acpi_scan_init(void);
 int acpi_sysfs_init(void);
@@ -59,7 +61,7 @@ struct acpi_ec {
 	unsigned long global_lock;
 	unsigned long flags;
 	struct mutex lock;
-	wait_queue_head_t wait;
+	struct swait_head wait;
 	struct list_head list;
 	struct transaction *curr;
 	raw_spinlock_t curr_lock;
-- 
1.7.8.3



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