From 7cce2d8fc39a7bbcdcf8755ad331409b0a103103 Mon Sep 17 00:00:00 2001
From: Imre Kaloz <kaloz@openwrt.org>
Date: Mon, 2 Jun 2008 08:22:56 +0000
Subject: add generic 2.6.26 patches/files

SVN-Revision: 11323
---
 .../patches-2.6.26/204-jffs2_eofdetect.patch       | 56 ++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 target/linux/generic-2.6/patches-2.6.26/204-jffs2_eofdetect.patch

(limited to 'target/linux/generic-2.6/patches-2.6.26/204-jffs2_eofdetect.patch')

diff --git a/target/linux/generic-2.6/patches-2.6.26/204-jffs2_eofdetect.patch b/target/linux/generic-2.6/patches-2.6.26/204-jffs2_eofdetect.patch
new file mode 100644
index 0000000000..5053401f11
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.26/204-jffs2_eofdetect.patch
@@ -0,0 +1,56 @@
+--- a/fs/jffs2/build.c
++++ b/fs/jffs2/build.c
+@@ -105,6 +105,17 @@
+ 	dbg_fsbuild("scanned flash completely\n");
+ 	jffs2_dbg_dump_block_lists_nolock(c);
+ 
++	if (c->flags & (1 << 7)) {
++		printk("%s(): unlocking the mtd device... ", __func__);
++		if (c->mtd->unlock)
++			c->mtd->unlock(c->mtd, 0, c->mtd->size);
++		printk("done.\n");
++		
++		printk("%s(): erasing all blocks after the end marker... ", __func__);
++		jffs2_erase_pending_blocks(c, -1);
++		printk("done.\n");
++	}
++
+ 	dbg_fsbuild("pass 1 starting\n");
+ 	c->flags |= JFFS2_SB_FLAG_BUILDING;
+ 	/* Now scan the directory tree, increasing nlink according to every dirent found. */
+--- a/fs/jffs2/scan.c
++++ b/fs/jffs2/scan.c
+@@ -142,9 +142,12 @@
+ 
+ 		/* reset summary info for next eraseblock scan */
+ 		jffs2_sum_reset_collected(s);
+-
+-		ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
+-						buf_size, s);
++		
++		if (c->flags & (1 << 7))
++			ret = BLK_STATE_ALLFF;
++		else
++			ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
++							buf_size, s);
+ 
+ 		if (ret < 0)
+ 			goto out;
+@@ -545,6 +548,17 @@
+ 			return err;
+ 	}
+ 
++	if ((buf[0] == 0xde) &&
++		(buf[1] == 0xad) &&
++		(buf[2] == 0xc0) &&
++		(buf[3] == 0xde)) {
++		/* end of filesystem. erase everything after this point */
++		printk("%s(): End of filesystem marker found at 0x%x\n", __func__, jeb->offset);
++		c->flags |= (1 << 7);
++
++		return BLK_STATE_ALLFF;
++	}
++	
+ 	/* We temporarily use 'ofs' as a pointer into the buffer/jeb */
+ 	ofs = 0;
+ 
-- 
cgit v1.2.3