[MTD] OneNAND: Do not allow oob write past end of page
OneNAND can write oob to successive pages, but NAND
does not do that. For compatibility, disallow OneNAND
from writing past the end of the page.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 6df309b..553b24d 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1186,6 +1186,13 @@
return -EINVAL;
}
+ /* For compatibility with NAND: Do not allow write past end of page */
+ if (column + len > oobsize) {
+ DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: "
+ "Attempt to write past end of page\n");
+ return -EINVAL;
+ }
+
/* Do not allow reads past end of device */
if (unlikely(to >= mtd->size ||
column + len > ((mtd->size >> this->page_shift) -