- int thislen = min_t(int, mtd->writesize, len - written);
-
- this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->writesize);
+ int bytes = mtd->writesize;
+ int thislen = min_t(int, bytes, len - written);
+ u_char *wbuf = (u_char *) buf;
+
+ this->command(mtd, ONENAND_CMD_BUFFERRAM, to, bytes);
+
+ /* Partial page write */
+ if (subpage) {
+ bytes = min_t(int, bytes - column, (int) len);
+ memset(this->page_buf, 0xff, mtd->writesize);
+ memcpy(this->page_buf + column, buf, bytes);
+ wbuf = this->page_buf;
+ /* Even though partial write, we need page size */
+ thislen = mtd->writesize;
+ }