mtd: document that MEMWRITE ioctl is NAND-specific
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index 1a7e1d2..36eace0 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -198,7 +198,8 @@
#define MEMISLOCKED _IOR('M', 23, struct erase_info_user)
/*
* Most generic write interface; can write in-band and/or out-of-band in various
- * modes (see "struct mtd_write_req")
+ * modes (see "struct mtd_write_req"). This ioctl is not supported for flashes
+ * without OOB, e.g., NOR flash.
*/
#define MEMWRITE _IOWR('M', 24, struct mtd_write_req)