X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fmtd%2Fmtdpart.c;h=1af989023c6644ca89c8e4107c21fcde8137904d;hb=647b804c8237aa35e19caf8e11ea8d5565107b0e;hp=6d7639b98eab9f978916fb416deea2c9527fe238;hpb=5bd34c091a044d130601370c370f84b1c59f1627;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 6d7639b..1af9890 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -16,7 +16,6 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/list.h>
-#include <linux/config.h>
 #include <linux/kmod.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
@@ -51,12 +50,21 @@ static int part_read (struct mtd_info *mtd, loff_t from, size_t len,
 			size_t *retlen, u_char *buf)
 {
 	struct mtd_part *part = PART(mtd);
+	int res;
+
 	if (from >= mtd->size)
 		len = 0;
 	else if (from + len > mtd->size)
 		len = mtd->size - from;
-	return part->master->read (part->master, from + part->offset,
+	res = part->master->read (part->master, from + part->offset,
 				   len, retlen, buf);
+	if (unlikely(res)) {
+		if (res == -EUCLEAN)
+			mtd->ecc_stats.corrected++;
+		if (res == -EBADMSG)
+			mtd->ecc_stats.failed++;
+	}
+	return res;
 }
 
 static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
@@ -78,16 +86,25 @@ static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_
 	part->master->unpoint (part->master, addr, from + part->offset, len);
 }
 
-static int part_read_oob (struct mtd_info *mtd, loff_t from, size_t len,
-			size_t *retlen, u_char *buf)
+static int part_read_oob(struct mtd_info *mtd, loff_t from,
+			 struct mtd_oob_ops *ops)
 {
 	struct mtd_part *part = PART(mtd);
+	int res;
+
 	if (from >= mtd->size)
-		len = 0;
-	else if (from + len > mtd->size)
-		len = mtd->size - from;
-	return part->master->read_oob (part->master, from + part->offset,
-					len, retlen, buf);
+		return -EINVAL;
+	if (ops->datbuf && from + ops->len > mtd->size)
+		return -EINVAL;
+	res = part->master->read_oob(part->master, from + part->offset, ops);
+
+	if (unlikely(res)) {
+		if (res == -EUCLEAN)
+			mtd->ecc_stats.corrected++;
+		if (res == -EBADMSG)
+			mtd->ecc_stats.failed++;
+	}
+	return res;
 }
 
 static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
@@ -134,18 +151,19 @@ static int part_write (struct mtd_info *mtd, loff_t to, size_t len,
 				    len, retlen, buf);
 }
 
-static int part_write_oob (struct mtd_info *mtd, loff_t to, size_t len,
-			size_t *retlen, const u_char *buf)
+static int part_write_oob(struct mtd_info *mtd, loff_t to,
+			 struct mtd_oob_ops *ops)
 {
 	struct mtd_part *part = PART(mtd);
+
 	if (!(mtd->flags & MTD_WRITEABLE))
 		return -EROFS;
+
 	if (to >= mtd->size)
-		len = 0;
-	else if (to + len > mtd->size)
-		len = mtd->size - to;
-	return part->master->write_oob (part->master, to + part->offset,
-					len, retlen, buf);
+		return -EINVAL;
+	if (ops->datbuf && to + ops->len > mtd->size)
+		return -EINVAL;
+	return part->master->write_oob(part->master, to + part->offset, ops);
 }
 
 static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
@@ -182,6 +200,11 @@ static int part_erase (struct mtd_info *mtd, struct erase_info *instr)
 		return -EINVAL;
 	instr->addr += part->offset;
 	ret = part->master->erase(part->master, instr);
+	if (ret) {
+		if (instr->fail_addr != 0xffffffff)
+			instr->fail_addr -= part->offset;
+		instr->addr -= part->offset;
+	}
 	return ret;
 }
 
@@ -245,12 +268,17 @@ static int part_block_isbad (struct mtd_info *mtd, loff_t ofs)
 static int part_block_markbad (struct mtd_info *mtd, loff_t ofs)
 {
 	struct mtd_part *part = PART(mtd);
+	int res;
+
 	if (!(mtd->flags & MTD_WRITEABLE))
 		return -EROFS;
 	if (ofs >= mtd->size)
 		return -EINVAL;
 	ofs += part->offset;
-	return part->master->block_markbad(part->master, ofs);
+	res = part->master->block_markbad(part->master, ofs);
+	if (!res)
+		mtd->ecc_stats.badblocks++;
+	return res;
 }
 
 /*
@@ -300,14 +328,13 @@ int add_mtd_partitions(struct mtd_info *master,
 	for (i = 0; i < nbparts; i++) {
 
 		/* allocate the partition structure */
-		slave = kmalloc (sizeof(*slave), GFP_KERNEL);
+		slave = kzalloc (sizeof(*slave), GFP_KERNEL);
 		if (!slave) {
 			printk ("memory allocation error while creating partitions for \"%s\"\n",
 				master->name);
 			del_mtd_partitions(master);
 			return -ENOMEM;
 		}
-		memset(slave, 0, sizeof(*slave));
 		list_add(&slave->list, &mtd_partitions);
 
 		/* set up the MTD object for this partition */
@@ -316,8 +343,8 @@ int add_mtd_partitions(struct mtd_info *master,
 		slave->mtd.size = parts[i].size;
 		slave->mtd.writesize = master->writesize;
 		slave->mtd.oobsize = master->oobsize;
-		slave->mtd.ecctype = master->ecctype;
-		slave->mtd.eccsize = master->eccsize;
+		slave->mtd.oobavail = master->oobavail;
+		slave->mtd.subpage_sft = master->subpage_sft;
 
 		slave->mtd.name = parts[i].name;
 		slave->mtd.bank_size = master->bank_size;
@@ -435,6 +462,16 @@ int add_mtd_partitions(struct mtd_info *master,
 		}
 
 		slave->mtd.ecclayout = master->ecclayout;
+		if (master->block_isbad) {
+			uint32_t offs = 0;
+
+			while(offs < slave->mtd.size) {
+				if (master->block_isbad(master,
+							offs + slave->offset))
+					slave->mtd.ecc_stats.badblocks++;
+				offs += slave->mtd.erasesize;
+			}
+		}
 
 		if(parts[i].mtdp)
 		{	/* store the object pointer (caller may or may not register it */
@@ -528,4 +565,3 @@ EXPORT_SYMBOL_GPL(deregister_mtd_parser);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
 MODULE_DESCRIPTION("Generic support for partitioning of MTD devices");
-