[MTD] assume mtd->writesize is 1 for NOR flashes
Signed-off-by: Artem B. Bityitskiy
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 9536567..e1d2a3d 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -110,9 +110,12 @@
* information below if they desire
*/
u_int32_t erasesize;
- /* Smallest availlable size for writing to the device. For NAND,
- * this is the page size, for some NOR chips, the size of ECC
- * covered blocks.
+ /* Minimal writable flash unit size. In case of NOR flash it is 1 (even
+ * though individual bits can be cleared), in case of NAND flash it is
+ * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR
+ * it is of ECC block size, etc. It is illegal to have writesize = 0.
+ * Any driver registering a struct mtd_info must ensure a writesize of
+ * 1 or larger.
*/
u_int32_t writesize;