The patch titled
sa1100fb: convert ctrlr_sem in a mutex
has been added to the -mm tree. Its filename is
sa1100fb-convert-ctrlr_sem-in-a-mutex.patch
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Subject: sa1100fb: convert ctrlr_sem in a mutex
From: Matthias Kaehlcke <matthias@xxxxxxxxxxxx>
The semaphore ctrlr_sem is used as a mutex. Convert it to the mutex API
Signed-off-by: Matthias Kaehlcke <matthias@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/sa1100fb.c | 7 ++++---
drivers/video/sa1100fb.h | 2 +-
2 files changed, 5 insertions(+), 4 deletions(-)
diff -puN drivers/video/sa1100fb.c~sa1100fb-convert-ctrlr_sem-in-a-mutex drivers/video/sa1100fb.c
--- a/drivers/video/sa1100fb.c~sa1100fb-convert-ctrlr_sem-in-a-mutex
+++ a/drivers/video/sa1100fb.c
@@ -174,6 +174,7 @@
#include <linux/cpufreq.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/mutex.h>
#include <asm/hardware.h>
#include <asm/io.h>
@@ -1107,7 +1108,7 @@ static void set_ctrlr_state(struct sa110
{
u_int old_state;
- down(&fbi->ctrlr_sem);
+ mutex_lock(&fbi->ctrlr_lock);
old_state = fbi->state;
@@ -1192,7 +1193,7 @@ static void set_ctrlr_state(struct sa110
}
break;
}
- up(&fbi->ctrlr_sem);
+ mutex_unlock(&fbi->ctrlr_lock);
}
/*
@@ -1444,7 +1445,7 @@ static struct sa1100fb_info * __init sa1
init_waitqueue_head(&fbi->ctrlr_wait);
INIT_WORK(&fbi->task, sa1100fb_task);
- init_MUTEX(&fbi->ctrlr_sem);
+ mutex_init(&fbi->ctrlr_lock);
return fbi;
}
diff -puN drivers/video/sa1100fb.h~sa1100fb-convert-ctrlr_sem-in-a-mutex drivers/video/sa1100fb.h
--- a/drivers/video/sa1100fb.h~sa1100fb-convert-ctrlr_sem-in-a-mutex
+++ a/drivers/video/sa1100fb.h
@@ -100,7 +100,7 @@ struct sa1100fb_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;
_
Patches currently in -mm which might be from matthias@xxxxxxxxxxxx are
arm-omap1-n770-convert-audio_pwr_sem-in-a-mutex.patch
arm-omap1-n770-convert-audio_pwr_sem-in-a-mutex-fix.patch
pxafb-convert-ctrlr_sem-in-a-mutex.patch
sa1100fb-convert-ctrlr_sem-in-a-mutex.patch
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