[MTD] NAND: nandsim: support subpage write
As flash cannot do 0->1 bit transitions when programming, do not do this in
the simulator too. This makes nandsim able to accept subpage writes.
Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index 28ee785..abebcab 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -852,6 +852,7 @@
*/
static int prog_page(struct nandsim *ns, int num)
{
+ int i;
union ns_mem *mypage;
u_char *pg_off;
@@ -867,7 +868,8 @@
}
pg_off = NS_PAGE_BYTE_OFF(ns);
- memcpy(pg_off, ns->buf.byte, num);
+ for (i = 0; i < num; i++)
+ pg_off[i] &= ns->buf.byte[i];
return 0;
}