1 files changed, 0 insertions, 145 deletions
diff --git a/target/linux/generic/patches-2.6.39/401-partial_eraseblock_write.patch b/target/linux/generic/patches-2.6.39/401-partial_eraseblock_write.patch
deleted file mode 100644
index 873c0d1cb1..0000000000
--- a/target/linux/generic/patches-2.6.39/401-partial_eraseblock_write.patch
+++ /dev/null
@@ -1,145 +0,0 @@
---- a/drivers/mtd/mtdpart.c
-+++ b/drivers/mtd/mtdpart.c
-@@ -33,6 +33,8 @@
- #include <linux/magic.h>
- #include <linux/err.h>
- 
-+#define MTD_ERASE_PARTIAL	0x8000 /* partition only covers parts of an erase block */
-+
- /* Our partition linked list */
- static LIST_HEAD(mtd_partitions);
- static DEFINE_MUTEX(mtd_partitions_mutex);
-@@ -256,13 +258,60 @@ static int part_erase(struct mtd_info *m
- 		return -EROFS;
- 	if (instr->addr >= mtd->size)
- 		return -EINVAL;
-+
-+	instr->partial_start = false;
-+	if (mtd->flags & MTD_ERASE_PARTIAL) {
-+		size_t readlen = 0;
-+		u64 mtd_ofs;
-+
-+		instr->erase_buf = kmalloc(part->master->erasesize, GFP_ATOMIC);
-+		if (!instr->erase_buf)
-+			return -ENOMEM;
-+
-+		mtd_ofs = part->offset + instr->addr;
-+		instr->erase_buf_ofs = do_div(mtd_ofs, part->master->erasesize);
-+
-+		if (instr->erase_buf_ofs > 0) {
-+			instr->addr -= instr->erase_buf_ofs;
-+			ret = part->master->read(part->master,
-+				instr->addr + part->offset,
-+				part->master->erasesize,
-+				&readlen, instr->erase_buf);
-+
-+			instr->partial_start = true;
-+		} else {
-+			mtd_ofs = part->offset + part->mtd.size;
-+			instr->erase_buf_ofs = part->master->erasesize -
-+				do_div(mtd_ofs, part->master->erasesize);
-+
-+			if (instr->erase_buf_ofs > 0) {
-+				instr->len += instr->erase_buf_ofs;
-+				ret = part->master->read(part->master,
-+					part->offset + instr->addr +
-+					instr->len - part->master->erasesize,
-+					part->master->erasesize, &readlen,
-+					instr->erase_buf);
-+			} else {
-+				ret = 0;
-+			}
-+		}
-+		if (ret < 0) {
-+			kfree(instr->erase_buf);
-+			return ret;
-+		}
-+
-+	}
-+
- 	instr->addr += part->offset;
- 	ret = part->master->erase(part->master, instr);
- 	if (ret) {
- 		if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
- 			instr->fail_addr -= part->offset;
- 		instr->addr -= part->offset;
-+		if (mtd->flags & MTD_ERASE_PARTIAL)
-+			kfree(instr->erase_buf);
- 	}
-+
- 	return ret;
- }
- 
-@@ -270,7 +319,25 @@ void mtd_erase_callback(struct erase_inf
- {
- 	if (instr->mtd->erase == part_erase) {
- 		struct mtd_part *part = PART(instr->mtd);
-+		size_t wrlen = 0;
- 
-+		if (instr->mtd->flags & MTD_ERASE_PARTIAL) {
-+			if (instr->partial_start) {
-+				part->master->write(part->master,
-+					instr->addr, instr->erase_buf_ofs,
-+					&wrlen, instr->erase_buf);
-+				instr->addr += instr->erase_buf_ofs;
-+			} else {
-+				instr->len -= instr->erase_buf_ofs;
-+				part->master->write(part->master,
-+					instr->addr + instr->len,
-+					instr->erase_buf_ofs, &wrlen,
-+					instr->erase_buf +
-+					part->master->erasesize -
-+					instr->erase_buf_ofs);
-+			}
-+			kfree(instr->erase_buf);
-+		}
- 		if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
- 			instr->fail_addr -= part->offset;
- 		instr->addr -= part->offset;
-@@ -529,18 +596,24 @@ static struct mtd_part *allocate_partiti
- 	if ((slave->mtd.flags & MTD_WRITEABLE) &&
- 	    mtd_mod_by_eb(slave->offset, &slave->mtd)) {
- 		/* Doesn't start on a boundary of major erase size */
--		/* FIXME: Let it be writable if it is on a boundary of
--		 * _minor_ erase size though */
--		slave->mtd.flags &= ~MTD_WRITEABLE;
--		printk(KERN_WARNING"mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
--			part->name);
-+		slave->mtd.flags |= MTD_ERASE_PARTIAL;
-+		if (((u32) slave->mtd.size) > master->erasesize)
-+			slave->mtd.flags &= ~MTD_WRITEABLE;
-+		else
-+			slave->mtd.erasesize = slave->mtd.size;
- 	}
- 	if ((slave->mtd.flags & MTD_WRITEABLE) &&
--	    mtd_mod_by_eb(slave->mtd.size, &slave->mtd)) {
--		slave->mtd.flags &= ~MTD_WRITEABLE;
--		printk(KERN_WARNING"mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
--			part->name);
-+	    mtd_mod_by_eb(slave->offset + slave->mtd.size, &slave->mtd)) {
-+		slave->mtd.flags |= MTD_ERASE_PARTIAL;
-+
-+		if ((u32) slave->mtd.size > master->erasesize)
-+			slave->mtd.flags &= ~MTD_WRITEABLE;
-+		else
-+			slave->mtd.erasesize = slave->mtd.size;
- 	}
-+	if ((slave->mtd.flags & (MTD_ERASE_PARTIAL|MTD_WRITEABLE)) == MTD_ERASE_PARTIAL)
-+		printk(KERN_WARNING"mtd: partition \"%s\" must either start or end on erase block boundary or be smaller than an erase block -- forcing read-only\n",
-+				part->name);
- 
- 	slave->mtd.ecclayout = master->ecclayout;
- 	if (master->block_isbad) {
---- a/include/linux/mtd/mtd.h
-+++ b/include/linux/mtd/mtd.h
-@@ -57,6 +57,10 @@ struct erase_info {
- 	u_long priv;
- 	u_char state;
- 	struct erase_info *next;
-+
-+	u8 *erase_buf;
-+	u32 erase_buf_ofs;
-+	bool partial_start;
- };
- 
- struct mtd_erase_region_info {