[PATCH] OneNAND: Use address instead block, page in bufferram

[Kyungmin Park]

[PATCH] OneNAND: Use address instead of block, page in bufferram

we use the address itself instead of block, page in bufferam.

Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
--


@@ -587,19 +601,18 @@ static int onenand_write_bufferram(struct mtd_info *mtd, int area,
 static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr)
 {
 	struct onenand_chip *this = mtd->priv;
-	int block, page;
 	int i;
+#ifdef DEBUG_BUFFERRAM
+	int block, page;
 
 	block = (int) (addr >> this->erase_shift);
-	page = (int) (addr >> this->page_shift);
-	page &= this->page_mask;
+	page = (int) (addr >> this->page_shift) & this->page_mask;
+#endif
 
 	i = ONENAND_CURRENT_BUFFERRAM(this);
 
 	/* Is there valid data? */
-	if (this->bufferram[i].block == block &&
-	    this->bufferram[i].page == page &&
-	    this->bufferram[i].valid)
+	if (this->bufferram[i].addr == addr && this->bufferram[i].valid)
 		return 1;
 
 	return 0;
@@ -617,24 +630,25 @@ static int onenand_update_bufferram(struct mtd_info *mtd, loff_t addr,
 		int valid)
 {
 	struct onenand_chip *this = mtd->priv;
-	int block, page;
 	int i;
+#ifdef DEBUG_BUFFERRAM
+	int block, page;
 
 	block = (int) (addr >> this->erase_shift);
-	page = (int) (addr >> this->page_shift);
-	page &= this->page_mask;
+	page = (int) (addr >> this->page_shift) & this->page_mask;
+#endif
 
 	/* Invalidate BufferRAM */
 	for (i = 0; i < MAX_BUFFERRAM; i++) {
-		if (this->bufferram[i].block == block &&
-		    this->bufferram[i].page == page)
+		if (this->bufferram[i].addr == addr) {
 			this->bufferram[i].valid = 0;
+			break;
+		}
 	}
 
 	/* Update BufferRAM */
 	i = ONENAND_CURRENT_BUFFERRAM(this);
-	this->bufferram[i].block = block;
-	this->bufferram[i].page = page;
+	this->bufferram[i].addr = addr;
 	this->bufferram[i].valid = valid;
 
 	return 0;
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index f775a7a..46e052f 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -47,9 +47,8 @@ typedef enum {
  * @valid:		valid flag
  */
 struct onenand_bufferram {
-	int block;
-	int page;
-	int valid;
+	loff_t		addr;
+	int		valid;
 };
 
 /**