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Commit 8a39c520 authored by Daniel Walker's avatar Daniel Walker Committed by Ralf Baechle
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[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: default avatarDaniel Walker <dwalker@mvista.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent f6ed10ab

arch/mips/lasat/picvue.c

+0 −2
Original line number Diff line number Diff line
@@ -22,8 +22,6 @@ 


struct pvc_defs *picvue;



DECLARE_MUTEX(pvc_sem);



static void pvc_reg_write(u32 val)

{

	*picvue->reg = val;

arch/mips/lasat/picvue.h

+0 −3
Original line number Diff line number Diff line
@@ -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;

arch/mips/lasat/picvue_proc.c

+10 −8
Original line number Diff line number Diff line
@@ -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;

}