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authorMatthias Kaehlcke <matthias@kaehlcke.net>2008-07-23 21:31:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 10:47:37 -0700
commitb91dbce56a8dbf312f6255d5121b295553d2b4db (patch)
tree77c3a0e93f4cca9b2c4ef2b73bce66acc792f60c /drivers/video
parent14aefd1b49ff3bd13caa37fb06bd53488d5d1486 (diff)
pxafb: convert ctrlr_sem in a mutex
The semaphore ctrlr_sem is used as a mutex. Convert it to the mutex API. Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Cc: Daniel Mack <daniel@caiaq.de> Cc: Eric Miao <eric.miao@marvell.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/pxafb.c7
-rw-r--r--drivers/video/pxafb.h2
2 files changed, 5 insertions, 4 deletions
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 5e8a140399f..2b707a8ce5d 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -41,6 +41,7 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/completion.h>
+#include <linux/mutex.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
@@ -1117,7 +1118,7 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
{
u_int old_state;
- down(&fbi->ctrlr_sem);
+ mutex_lock(&fbi->ctrlr_lock);
old_state = fbi->state;
@@ -1205,7 +1206,7 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
}
break;
}
- up(&fbi->ctrlr_sem);
+ mutex_unlock(&fbi->ctrlr_lock);
}
/*
@@ -1458,7 +1459,7 @@ static struct pxafb_info * __devinit pxafb_init_fbinfo(struct device *dev)
init_waitqueue_head(&fbi->ctrlr_wait);
INIT_WORK(&fbi->task, pxafb_task);
- init_MUTEX(&fbi->ctrlr_sem);
+ mutex_init(&fbi->ctrlr_lock);
init_completion(&fbi->disable_done);
#ifdef CONFIG_FB_PXA_SMARTPANEL
init_completion(&fbi->command_done);
diff --git a/drivers/video/pxafb.h b/drivers/video/pxafb.h
index 8238dc82642..31541b86f13 100644
--- a/drivers/video/pxafb.h
+++ b/drivers/video/pxafb.h
@@ -106,7 +106,7 @@ struct pxafb_info {
volatile u_char state;
volatile u_char task_state;
- struct semaphore ctrlr_sem;
+ struct mutex ctrlr_lock;
wait_queue_head_t ctrlr_wait;
struct work_struct task;