[PATCH] sem2mutex: drivers/mtd/

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/mtd/devices/blkmtd.c

@@ -29,7 +29,7 @@
 #include <linux/list.h>
 #include <linux/init.h>
 #include <linux/mtd/mtd.h>
-
+#include <linux/mutex.h>
 
 #define err(format, arg...) printk(KERN_ERR "blkmtd: " format "\n" , ## arg)
 #define info(format, arg...) printk(KERN_INFO "blkmtd: " format "\n" , ## arg)
@@ -46,7 +46,7 @@ struct blkmtd_dev {
 	struct list_head list;
 	struct block_device *blkdev;
 	struct mtd_info mtd_info;
-	struct semaphore wrbuf_mutex;
+	struct mutex wrbuf_mutex;
 };
 
 
@@ -268,7 +268,7 @@ static int write_pages(struct blkmtd_dev *dev, const u_char *buf, loff_t to,
 	if(end_len)
 		pagecnt++;
 
-	down(&dev->wrbuf_mutex);
+	mutex_lock(&dev->wrbuf_mutex);
 
 	DEBUG(3, "blkmtd: write: start_len = %zd len = %zd end_len = %zd pagecnt = %d\n",
 	      start_len, len, end_len, pagecnt);
@@ -376,7 +376,7 @@ static int write_pages(struct blkmtd_dev *dev, const u_char *buf, loff_t to,
 		blkmtd_write_out(bio);
 
 	DEBUG(2, "blkmtd: write: end, retlen = %zd, err = %d\n", *retlen, err);
-	up(&dev->wrbuf_mutex);
+	mutex_unlock(&dev->wrbuf_mutex);
 
 	if(retlen)
 		*retlen = thislen;
@@ -659,7 +659,7 @@ static struct blkmtd_dev *add_device(char *devname, int readonly, int erase_size
 	memset(dev, 0, sizeof(struct blkmtd_dev));
 	dev->blkdev = bdev;
 	if(!readonly) {
-		init_MUTEX(&dev->wrbuf_mutex);
+		mutex_init(&dev->wrbuf_mutex);
 	}
 
 	dev->mtd_info.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;

drivers/mtd/devices/block2mtd.c

@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/mtd/mtd.h>
 #include <linux/buffer_head.h>
+#include <linux/mutex.h>
 
 #define VERSION "$Revision: 1.30 $"
 
@@ -31,7 +32,7 @@ struct block2mtd_dev {
 	struct list_head list;
 	struct block_device *blkdev;
 	struct mtd_info mtd;
-	struct semaphore write_mutex;
+	struct mutex write_mutex;
 };
 
 
@@ -134,9 +135,9 @@ static int block2mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
 	int err;
 
 	instr->state = MTD_ERASING;
-	down(&dev->write_mutex);
+	mutex_lock(&dev->write_mutex);
 	err = _block2mtd_erase(dev, from, len);
-	up(&dev->write_mutex);
+	mutex_unlock(&dev->write_mutex);
 	if (err) {
 		ERROR("erase failed err = %d", err);
 		instr->state = MTD_ERASE_FAILED;
@@ -249,9 +250,9 @@ static int block2mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
 	if (to + len > mtd->size)
 		len = mtd->size - to;
 
-	down(&dev->write_mutex);
+	mutex_lock(&dev->write_mutex);
 	err = _block2mtd_write(dev, buf, to, len, retlen);
-	up(&dev->write_mutex);
+	mutex_unlock(&dev->write_mutex);
 	if (err > 0)
 		err = 0;
 	return err;
@@ -310,7 +311,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
 		goto devinit_err;
 	}
 
-	init_MUTEX(&dev->write_mutex);
+	mutex_init(&dev->write_mutex);
 
 	/* Setup the MTD structure */
 	/* make the name contain the block device in */

drivers/mtd/devices/doc2000.c

@@ -606,7 +606,7 @@ static void DoC2k_init(struct mtd_info *mtd)
 
 	this->curfloor = -1;
 	this->curchip = -1;
-	init_MUTEX(&this->lock);
+	mutex_init(&this->lock);
 
 	/* Ident all the chips present. */
 	DoC_ScanChips(this, maxchips);
@@ -646,7 +646,7 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
 	if (from >= this->totlen)
 		return -EINVAL;
 
-	down(&this->lock);
+	mutex_lock(&this->lock);
 
 	*retlen = 0;
 	while (left) {
@@ -775,7 +775,7 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
 		buf += len;
 	}
 
-	up(&this->lock);
+	mutex_unlock(&this->lock);
 
 	return ret;
 }
@@ -804,7 +804,7 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 	if (to >= this->totlen)
 		return -EINVAL;
 
-	down(&this->lock);
+	mutex_lock(&this->lock);
 
 	*retlen = 0;
 	while (left) {
@@ -874,7 +874,7 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 				printk(KERN_ERR "Error programming flash\n");
 				/* Error in programming */
 				*retlen = 0;
-				up(&this->lock);
+				mutex_unlock(&this->lock);
 				return -EIO;
 			}
 
@@ -936,7 +936,7 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 			printk(KERN_ERR "Error programming flash\n");
 			/* Error in programming */
 			*retlen = 0;
-			up(&this->lock);
+			mutex_unlock(&this->lock);
 			return -EIO;
 		}
 
@@ -957,7 +957,7 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 
 			ret = doc_write_oob_nolock(mtd, to, 8, &dummy, x);
 			if (ret) {
-				up(&this->lock);
+				mutex_unlock(&this->lock);
 				return ret;
 			}
 		}
@@ -967,7 +967,7 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
 		buf += len;
 	}
 
-	up(&this->lock);
+	mutex_unlock(&this->lock);
 	return 0;
 }
 
@@ -1038,7 +1038,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 	int len256 = 0, ret;
 	struct Nand *mychip;
 
-	down(&this->lock);
+	mutex_lock(&this->lock);
 
 	mychip = &this->chips[ofs >> this->chipshift];
 
@@ -1084,7 +1084,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
 
 	ret = DoC_WaitReady(this);
 
-	up(&this->lock);
+	mutex_unlock(&this->lock);
 	return ret;
 
 }
@@ -1198,10 +1198,10 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
  	struct DiskOnChip *this = mtd->priv;
  	int ret;
 
- 	down(&this->lock);
+ 	mutex_lock(&this->lock);
  	ret = doc_write_oob_nolock(mtd, ofs, len, retlen, buf);
 
- 	up(&this->lock);
+ 	mutex_unlock(&this->lock);
  	return ret;
 }
 
@@ -1215,10 +1215,10 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *instr)
 	struct Nand *mychip;
 	int status;
 
- 	down(&this->lock);
+ 	mutex_lock(&this->lock);
 
 	if (ofs & (mtd->erasesize-1) || len & (mtd->erasesize-1)) {
-		up(&this->lock);
+		mutex_unlock(&this->lock);
 		return -EINVAL;
 	}
 
@@ -1266,7 +1266,7 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *instr)
  callback:
 	mtd_erase_callback(instr);
 
-	up(&this->lock);
+	mutex_unlock(&this->lock);
 	return 0;
 }
 

drivers/mtd/mtd_blkdevs.c

@@ -19,12 +19,12 @@
 #include <linux/spinlock.h>
 #include <linux/hdreg.h>
 #include <linux/init.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 
 static LIST_HEAD(blktrans_majors);
 
-extern struct semaphore mtd_table_mutex;
+extern struct mutex mtd_table_mutex;
 extern struct mtd_info *mtd_table[];
 
 struct mtd_blkcore_priv {
@@ -122,9 +122,9 @@ static int mtd_blktrans_thread(void *arg)
 
 		spin_unlock_irq(rq->queue_lock);
 
-		down(&dev->sem);
+		mutex_lock(&dev->lock);
 		res = do_blktrans_request(tr, dev, req);
-		up(&dev->sem);
+		mutex_unlock(&dev->lock);
 
 		spin_lock_irq(rq->queue_lock);
 
@@ -235,8 +235,8 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
 	int last_devnum = -1;
 	struct gendisk *gd;
 
-	if (!down_trylock(&mtd_table_mutex)) {
-		up(&mtd_table_mutex);
+	if (!!mutex_trylock(&mtd_table_mutex)) {
+		mutex_unlock(&mtd_table_mutex);
 		BUG();
 	}
 
@@ -267,7 +267,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
 		return -EBUSY;
 	}
 
-	init_MUTEX(&new->sem);
+	mutex_init(&new->lock);
 	list_add_tail(&new->list, &tr->devs);
  added:
 	if (!tr->writesect)
@@ -313,8 +313,8 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
 
 int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old)
 {
-	if (!down_trylock(&mtd_table_mutex)) {
-		up(&mtd_table_mutex);
+	if (!!mutex_trylock(&mtd_table_mutex)) {
+		mutex_unlock(&mtd_table_mutex);
 		BUG();
 	}
 
@@ -378,14 +378,14 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
 
 	memset(tr->blkcore_priv, 0, sizeof(*tr->blkcore_priv));
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 
 	ret = register_blkdev(tr->major, tr->name);
 	if (ret) {
 		printk(KERN_WARNING "Unable to register %s block device on major %d: %d\n",
 		       tr->name, tr->major, ret);
 		kfree(tr->blkcore_priv);
-		up(&mtd_table_mutex);
+		mutex_unlock(&mtd_table_mutex);
 		return ret;
 	}
 	spin_lock_init(&tr->blkcore_priv->queue_lock);
@@ -396,7 +396,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
 	if (!tr->blkcore_priv->rq) {
 		unregister_blkdev(tr->major, tr->name);
 		kfree(tr->blkcore_priv);
-		up(&mtd_table_mutex);
+		mutex_unlock(&mtd_table_mutex);
 		return -ENOMEM;
 	}
 
@@ -407,7 +407,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
 		blk_cleanup_queue(tr->blkcore_priv->rq);
 		unregister_blkdev(tr->major, tr->name);
 		kfree(tr->blkcore_priv);
-		up(&mtd_table_mutex);
+		mutex_unlock(&mtd_table_mutex);
 		return ret;
 	}
 
@@ -419,7 +419,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
 			tr->add_mtd(tr, mtd_table[i]);
 	}
 
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
 
 	return 0;
 }
@@ -428,7 +428,7 @@ int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr)
 {
 	struct list_head *this, *next;
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 
 	/* Clean up the kernel thread */
 	tr->blkcore_priv->exiting = 1;
@@ -446,7 +446,7 @@ int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr)
 	blk_cleanup_queue(tr->blkcore_priv->rq);
 	unregister_blkdev(tr->major, tr->name);
 
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
 
 	kfree(tr->blkcore_priv);
 

drivers/mtd/mtdblock.c

@@ -19,11 +19,13 @@
 
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/blktrans.h>
+#include <linux/mutex.h>
+
 
 static struct mtdblk_dev {
 	struct mtd_info *mtd;
 	int count;
-	struct semaphore cache_sem;
+	struct mutex cache_mutex;
 	unsigned char *cache_data;
 	unsigned long cache_offset;
 	unsigned int cache_size;
@@ -284,7 +286,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
 	mtdblk->count = 1;
 	mtdblk->mtd = mtd;
 
-	init_MUTEX (&mtdblk->cache_sem);
+	mutex_init(&mtdblk->cache_mutex);
 	mtdblk->cache_state = STATE_EMPTY;
 	if ((mtdblk->mtd->flags & MTD_CAP_RAM) != MTD_CAP_RAM &&
 	    mtdblk->mtd->erasesize) {
@@ -306,9 +308,9 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd)
 
    	DEBUG(MTD_DEBUG_LEVEL1, "mtdblock_release\n");
 
-	down(&mtdblk->cache_sem);
+	mutex_lock(&mtdblk->cache_mutex);
 	write_cached_data(mtdblk);
-	up(&mtdblk->cache_sem);
+	mutex_unlock(&mtdblk->cache_mutex);
 
 	if (!--mtdblk->count) {
 		/* It was the last usage. Free the device */
@@ -327,9 +329,9 @@ static int mtdblock_flush(struct mtd_blktrans_dev *dev)
 {
 	struct mtdblk_dev *mtdblk = mtdblks[dev->devnum];
 
-	down(&mtdblk->cache_sem);
+	mutex_lock(&mtdblk->cache_mutex);
 	write_cached_data(mtdblk);
-	up(&mtdblk->cache_sem);
+	mutex_unlock(&mtdblk->cache_mutex);
 
 	if (mtdblk->mtd->sync)
 		mtdblk->mtd->sync(mtdblk->mtd);

drivers/mtd/mtdcore.c

@@ -27,7 +27,7 @@
 
 /* These are exported solely for the purpose of mtd_blkdevs.c. You
    should not use them for _anything_ else */
-DECLARE_MUTEX(mtd_table_mutex);
+DEFINE_MUTEX(mtd_table_mutex);
 struct mtd_info *mtd_table[MAX_MTD_DEVICES];
 
 EXPORT_SYMBOL_GPL(mtd_table_mutex);
@@ -49,7 +49,7 @@ int add_mtd_device(struct mtd_info *mtd)
 {
 	int i;
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 
 	for (i=0; i < MAX_MTD_DEVICES; i++)
 		if (!mtd_table[i]) {
@@ -67,7 +67,7 @@ int add_mtd_device(struct mtd_info *mtd)
 				not->add(mtd);
 			}
 
-			up(&mtd_table_mutex);
+			mutex_unlock(&mtd_table_mutex);
 			/* We _know_ we aren't being removed, because
 			   our caller is still holding us here. So none
 			   of this try_ nonsense, and no bitching about it
@@ -76,7 +76,7 @@ int add_mtd_device(struct mtd_info *mtd)
 			return 0;
 		}
 
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
 	return 1;
 }
 
@@ -94,7 +94,7 @@ int del_mtd_device (struct mtd_info *mtd)
 {
 	int ret;
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 
 	if (mtd_table[mtd->index] != mtd) {
 		ret = -ENODEV;
@@ -118,7 +118,7 @@ int del_mtd_device (struct mtd_info *mtd)
 		ret = 0;
 	}
 
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
 	return ret;
 }
 
@@ -135,7 +135,7 @@ void register_mtd_user (struct mtd_notifier *new)
 {
 	int i;
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 
 	list_add(&new->list, &mtd_notifiers);
 
@@ -145,7 +145,7 @@ void register_mtd_user (struct mtd_notifier *new)
 		if (mtd_table[i])
 			new->add(mtd_table[i]);
 
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
 }
 
 /**
@@ -162,7 +162,7 @@ int unregister_mtd_user (struct mtd_notifier *old)
 {
 	int i;
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 
 	module_put(THIS_MODULE);
 
@@ -171,7 +171,7 @@ int unregister_mtd_user (struct mtd_notifier *old)
 			old->remove(mtd_table[i]);
 
 	list_del(&old->list);
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
 	return 0;
 }
 
@@ -193,7 +193,7 @@ struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num)
 	struct mtd_info *ret = NULL;
 	int i;
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 
 	if (num == -1) {
 		for (i=0; i< MAX_MTD_DEVICES; i++)
@@ -211,7 +211,7 @@ struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num)
 	if (ret)
 		ret->usecount++;
 
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
 	return ret;
 }
 
@@ -219,9 +219,9 @@ void put_mtd_device(struct mtd_info *mtd)
 {
 	int c;
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 	c = --mtd->usecount;
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
 	BUG_ON(c < 0);
 
 	module_put(mtd->owner);
@@ -319,7 +319,7 @@ static int mtd_read_proc (char *page, char **start, off_t off, int count,
 	int len, l, i;
         off_t   begin = 0;
 
-	down(&mtd_table_mutex);
+	mutex_lock(&mtd_table_mutex);
 
 	len = sprintf(page, "dev:    size   erasesize  name\n");
         for (i=0; i< MAX_MTD_DEVICES; i++) {
@@ -337,7 +337,7 @@ static int mtd_read_proc (char *page, char **start, off_t off, int count,
         *eof = 1;
 
 done:
-	up(&mtd_table_mutex);
+	mutex_unlock(&mtd_table_mutex);
         if (off >= len+begin)
                 return 0;
         *start = page + (off-begin);

include/linux/mtd/blktrans.h

@@ -10,7 +10,7 @@
 #ifndef __MTD_TRANS_H__
 #define __MTD_TRANS_H__
 
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 struct hd_geometry;
 struct mtd_info;
@@ -22,7 +22,7 @@ struct mtd_blktrans_dev {
 	struct mtd_blktrans_ops *tr;
 	struct list_head list;
 	struct mtd_info *mtd;
-	struct semaphore sem;
+	struct mutex lock;
 	int devnum;
 	int blksize;
 	unsigned long size;

include/linux/mtd/doc2000.h

@@ -15,7 +15,7 @@
 #define __MTD_DOC2000_H__
 
 #include <linux/mtd/mtd.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 #define DoC_Sig1 0
 #define DoC_Sig2 1
@@ -187,7 +187,7 @@ struct DiskOnChip {
 	int numchips;
 	struct Nand *chips;
 	struct mtd_info *nextdoc;
-	struct semaphore lock;
+	struct mutex lock;
 };
 
 int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);