mtd: onenand: allocate verify buffer in the core
This patch extends OneNAND core code with support for OneNAND verify
write check. This is done by allocating the buffer for verify read
directly from the core code.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 1b26f50..045811f 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -3932,6 +3932,13 @@
__func__);
return -ENOMEM;
}
+#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
+ this->verify_buf = kzalloc(mtd->writesize, GFP_KERNEL);
+ if (!this->verify_buf) {
+ kfree(this->page_buf);
+ return -ENOMEM;
+ }
+#endif
this->options |= ONENAND_PAGEBUF_ALLOC;
}
if (!this->oob_buf) {
@@ -4059,8 +4066,12 @@
kfree(this->bbm);
}
/* Buffers allocated by onenand_scan */
- if (this->options & ONENAND_PAGEBUF_ALLOC)
+ if (this->options & ONENAND_PAGEBUF_ALLOC) {
kfree(this->page_buf);
+#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
+ kfree(this->verify_buf);
+#endif
+ }
if (this->options & ONENAND_OOBBUF_ALLOC)
kfree(this->oob_buf);
kfree(mtd->eraseregions);
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index c9a3c35..9b43268 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -125,6 +125,9 @@
flstate_t state;
unsigned char *page_buf;
unsigned char *oob_buf;
+#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
+ unsigned char *verify_buf;
+#endif
int subpagesize;
struct nand_ecclayout *ecclayout;