X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=drivers%2Fmtd%2Fmtdpart.c;h=c66902df3171aef08e1066fde0157992f456ffdc;hb=83f7a2c118833d3738b4d162ea3c17d0bd8ffa94;hp=6174a97d790274f5aa1245dc53171c324482ebb9;hpb=0ae842eaf9512d9c9479797083750c077fc7d1f8;p=cascardo%2Flinux.git

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 6174a97d7902..c66902df3171 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -151,6 +151,20 @@ static int part_write (struct mtd_info *mtd, loff_t to, size_t len,
 				    len, retlen, buf);
 }
 
+static int part_panic_write (struct mtd_info *mtd, loff_t to, size_t len,
+			size_t *retlen, const u_char *buf)
+{
+	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->panic_write (part->master, to + part->offset,
+				    len, retlen, buf);
+}
+
 static int part_write_oob(struct mtd_info *mtd, loff_t to,
 			 struct mtd_oob_ops *ops)
 {
@@ -352,6 +366,9 @@ int add_mtd_partitions(struct mtd_info *master,
 		slave->mtd.read = part_read;
 		slave->mtd.write = part_write;
 
+		if (master->panic_write)
+			slave->mtd.panic_write = part_panic_write;
+
 		if(master->point && master->unpoint){
 			slave->mtd.point = part_point;
 			slave->mtd.unpoint = part_unpoint;