mtd: nand: add a helper to detect the nand type
This helper detects that whether the mtd's type is nand type.
Now, it's clear that the MTD_NANDFLASH stands for SLC nand only.
So use the mtd_type_is_nand() to replace the old check method
to do the nand type (include the SLC and MLC) check.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c
index 3af3514..b66b541 100644
--- a/drivers/mtd/inftlcore.c
+++ b/drivers/mtd/inftlcore.c
@@ -50,7 +50,7 @@
struct INFTLrecord *inftl;
unsigned long temp;
- if (mtd->type != MTD_NANDFLASH || mtd->size > UINT_MAX)
+ if (!mtd_type_is_nand(mtd) || mtd->size > UINT_MAX)
return;
/* OK, this is moderately ugly. But probably safe. Alternatives? */
if (memcmp(mtd->name, "DiskOnChip", 10))
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index c5f4ebf..46f27de 100644
--- a/drivers/mtd/nftlcore.c
+++ b/drivers/mtd/nftlcore.c
@@ -50,7 +50,7 @@
struct NFTLrecord *nftl;
unsigned long temp;
- if (mtd->type != MTD_NANDFLASH || mtd->size > UINT_MAX)
+ if (!mtd_type_is_nand(mtd) || mtd->size > UINT_MAX)
return;
/* OK, this is moderately ugly. But probably safe. Alternatives? */
if (memcmp(mtd->name, "DiskOnChip", 10))
diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c
index ab2a52a..daf82ba 100644
--- a/drivers/mtd/ssfdc.c
+++ b/drivers/mtd/ssfdc.c
@@ -290,7 +290,7 @@
int cis_sector;
/* Check for small page NAND flash */
- if (mtd->type != MTD_NANDFLASH || mtd->oobsize != OOB_SIZE ||
+ if (!mtd_type_is_nand(mtd) || mtd->oobsize != OOB_SIZE ||
mtd->size > UINT_MAX)
return;
diff --git a/drivers/mtd/tests/nandbiterrs.c b/drivers/mtd/tests/nandbiterrs.c
index 3cd3aab..6f97615 100644
--- a/drivers/mtd/tests/nandbiterrs.c
+++ b/drivers/mtd/tests/nandbiterrs.c
@@ -349,7 +349,7 @@
goto exit_mtddev;
}
- if (mtd->type != MTD_NANDFLASH) {
+ if (!mtd_type_is_nand(mtd)) {
pr_info("this test requires NAND flash\n");
err = -ENODEV;
goto exit_nand;
diff --git a/drivers/mtd/tests/oobtest.c b/drivers/mtd/tests/oobtest.c
index ff35c46..2e9e2d1 100644
--- a/drivers/mtd/tests/oobtest.c
+++ b/drivers/mtd/tests/oobtest.c
@@ -289,7 +289,7 @@
return err;
}
- if (mtd->type != MTD_NANDFLASH) {
+ if (!mtd_type_is_nand(mtd)) {
pr_info("this test requires NAND flash\n");
goto out;
}
diff --git a/drivers/mtd/tests/pagetest.c b/drivers/mtd/tests/pagetest.c
index 44b96e9..ed2d3f6 100644
--- a/drivers/mtd/tests/pagetest.c
+++ b/drivers/mtd/tests/pagetest.c
@@ -353,7 +353,7 @@
return err;
}
- if (mtd->type != MTD_NANDFLASH) {
+ if (!mtd_type_is_nand(mtd)) {
pr_info("this test requires NAND flash\n");
goto out;
}
diff --git a/drivers/mtd/tests/subpagetest.c b/drivers/mtd/tests/subpagetest.c
index e2c0adf..a876371 100644
--- a/drivers/mtd/tests/subpagetest.c
+++ b/drivers/mtd/tests/subpagetest.c
@@ -299,7 +299,7 @@
return err;
}
- if (mtd->type != MTD_NANDFLASH) {
+ if (!mtd_type_is_nand(mtd)) {
pr_info("this test requires NAND flash\n");
goto out;
}
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index f9bfe52..88409b8 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -354,6 +354,11 @@
return mtd->_read_oob && mtd->_write_oob;
}
+static inline int mtd_type_is_nand(const struct mtd_info *mtd)
+{
+ return mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH;
+}
+
static inline int mtd_can_have_bb(const struct mtd_info *mtd)
{
return !!mtd->_block_isbad;