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authorDaniel Walker <dwalker@mvista.com>2008-01-10 20:53:21 -0800
committerRalf Baechle <ralf@linux-mips.org>2008-01-29 10:15:01 +0000
commit8a39c520b28f1ffa528baaae6ecfaa3feb5377a5 (patch)
treefedbbff988de9586f4dd750d4c1dcadb2e3fe900
parentf6ed10ab972b00cd57567a2ac9e393226840e458 (diff)
downloadlinux-8a39c520b28f1ffa528baaae6ecfaa3feb5377a5.tar.gz
[MIPS] Lasat: Convert pvc_sem semaphore to mutex
I also changed the name to pvc_mutex, and moved the define to the file it's used in which allows it to be static. Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/lasat/picvue.c2
-rw-r--r--arch/mips/lasat/picvue.h3
-rw-r--r--arch/mips/lasat/picvue_proc.c18
3 files changed, 10 insertions, 13 deletions
diff --git a/arch/mips/lasat/picvue.c b/arch/mips/lasat/picvue.c
index 6471d0663fd..d3d04c392e2 100644
--- a/arch/mips/lasat/picvue.c
+++ b/arch/mips/lasat/picvue.c
@@ -22,8 +22,6 @@
struct pvc_defs *picvue;
-DECLARE_MUTEX(pvc_sem);
-
static void pvc_reg_write(u32 val)
{
*picvue->reg = val;
diff --git a/arch/mips/lasat/picvue.h b/arch/mips/lasat/picvue.h
index 2a96bf97189..91df5537112 100644
--- a/arch/mips/lasat/picvue.h
+++ b/arch/mips/lasat/picvue.h
@@ -4,8 +4,6 @@
* Brian Murphy <brian.murphy@eicon.com>
*
*/
-#include <asm/semaphore.h>
-
struct pvc_defs {
volatile u32 *reg;
u32 data_shift;
@@ -45,4 +43,3 @@ void pvc_move(u8 cmd);
void pvc_clear(void);
void pvc_home(void);
-extern struct semaphore pvc_sem;
diff --git a/arch/mips/lasat/picvue_proc.c b/arch/mips/lasat/picvue_proc.c
index 9947c152582..0bb6037afba 100644
--- a/arch/mips/lasat/picvue_proc.c
+++ b/arch/mips/lasat/picvue_proc.c
@@ -13,9 +13,11 @@
#include <linux/interrupt.h>
#include <linux/timer.h>
+#include <linux/mutex.h>
#include "picvue.h"
+static DEFINE_MUTEX(pvc_mutex);
static char pvc_lines[PVC_NLINES][PVC_LINELEN+1];
static int pvc_linedata[PVC_NLINES];
static struct proc_dir_entry *pvc_display_dir;
@@ -48,9 +50,9 @@ static int pvc_proc_read_line(char *page, char **start,
return 0;
}
- down(&pvc_sem);
+ mutex_lock(&pvc_mutex);
page += sprintf(page, "%s\n", pvc_lines[lineno]);
- up(&pvc_sem);
+ mutex_unlock(&pvc_mutex);
return page - origpage;
}
@@ -73,10 +75,10 @@ static int pvc_proc_write_line(struct file *file, const char *buffer,
if (buffer[count-1] == '\n')
count--;
- down(&pvc_sem);
+ mutex_lock(&pvc_mutex);
strncpy(pvc_lines[lineno], buffer, count);
pvc_lines[lineno][count] = '\0';
- up(&pvc_sem);
+ mutex_unlock(&pvc_mutex);
tasklet_schedule(&pvc_display_tasklet);
@@ -89,7 +91,7 @@ static int pvc_proc_write_scroll(struct file *file, const char *buffer,
int origcount = count;
int cmd = simple_strtol(buffer, NULL, 10);
- down(&pvc_sem);
+ mutex_lock(&pvc_mutex);
if (scroll_interval != 0)
del_timer(&timer);
@@ -106,7 +108,7 @@ static int pvc_proc_write_scroll(struct file *file, const char *buffer,
}
add_timer(&timer);
}
- up(&pvc_sem);
+ mutex_unlock(&pvc_mutex);
return origcount;
}
@@ -117,9 +119,9 @@ static int pvc_proc_read_scroll(char *page, char **start,
{
char *origpage = page;
- down(&pvc_sem);
+ mutex_lock(&pvc_mutex);
page += sprintf(page, "%d\n", scroll_dir * scroll_interval);
- up(&pvc_sem);
+ mutex_unlock(&pvc_mutex);
return page - origpage;
}