X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fgeneric%2Fpatches-4.0%2F411-mtd-partial_eraseblock_write.patch;fp=target%2Flinux%2Fgeneric%2Fpatches-4.0%2F411-mtd-partial_eraseblock_write.patch;h=0000000000000000000000000000000000000000;hb=ad133b57a94165e1289ac63b38139047a1450dbb;hp=ada7cc10720ab66f9703e33642d6b198942e439d;hpb=86a46a817ba7cfab4963818f9c97508f1f835762;p=openwrt%2Fopenwrt.git

diff --git a/target/linux/generic/patches-4.0/411-mtd-partial_eraseblock_write.patch b/target/linux/generic/patches-4.0/411-mtd-partial_eraseblock_write.patch
deleted file mode 100644
index ada7cc1072..0000000000
--- a/target/linux/generic/patches-4.0/411-mtd-partial_eraseblock_write.patch
+++ /dev/null
@@ -1,142 +0,0 @@
---- a/drivers/mtd/mtdpart.c
-+++ b/drivers/mtd/mtdpart.c
-@@ -35,6 +35,8 @@
- #include "mtdcore.h"
- #include "mtdsplit/mtdsplit.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);
-@@ -233,13 +235,61 @@ static int part_erase(struct mtd_info *m
- 	struct mtd_part *part = PART(mtd);
- 	int ret;
- 
-+
-+	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 = mtd_read(part->master,
-+				instr->addr + part->offset,
-+				part->master->erasesize,
-+				&readlen, instr->erase_buf);
-+
-+			instr->len += instr->erase_buf_ofs;
-+			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 = mtd_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;
- }
- 
-@@ -247,7 +297,25 @@ 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;
-@@ -513,17 +581,20 @@ 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;
- 	}
- 
- 	slave->mtd.ecclayout = master->ecclayout;
---- a/include/linux/mtd/mtd.h
-+++ b/include/linux/mtd/mtd.h
-@@ -55,6 +55,10 @@ 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 {