X-Git-Url: http://git.samba.org/samba.git/?a=blobdiff_plain;f=drivers%2Fmtd%2Fredboot.c;h=47474903263c377555b0a5c0fefad3af737c1c78;hb=c523aef0f7284970463ebd77a54bca9069711d4a;hp=a61351f88ec046d894bf07bc042907e2a22bb364;hpb=cb553c480078759014096bc766dc76400e1d8397;p=sfrench%2Fcifs-2.6.git

diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c
index a61351f88ec0..47474903263c 100644
--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -59,16 +59,31 @@ static int parse_redboot_partitions(struct mtd_info *master,
 	static char nullstring[] = "unallocated";
 #endif
 
+	if ( directory < 0 ) {
+		offset = master->size + directory * master->erasesize;
+		while (master->block_isbad && 
+		       master->block_isbad(master, offset)) {
+			if (!offset) {
+			nogood:
+				printk(KERN_NOTICE "Failed to find a non-bad block to check for RedBoot partition table\n");
+				return -EIO;
+			}
+			offset -= master->erasesize;
+		}
+	} else {
+		offset = directory * master->erasesize;
+		while (master->block_isbad && 
+		       master->block_isbad(master, offset)) {
+			offset += master->erasesize;
+			if (offset == master->size)
+				goto nogood;
+		}
+	}
 	buf = vmalloc(master->erasesize);
 
 	if (!buf)
 		return -ENOMEM;
 
-	if ( directory < 0 )
-		offset = master->size + directory*master->erasesize;
-	else
-		offset = directory*master->erasesize;
-
 	printk(KERN_NOTICE "Searching for RedBoot partition table in %s at offset 0x%lx\n",
 	       master->name, offset);