From 818b97392932ac4cecc36ab839957258367004a9 Mon Sep 17 00:00:00 2001 From: Huang Shijie Date: Wed, 25 Sep 2013 14:58:17 +0800 Subject: [PATCH] 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 Signed-off-by: Brian Norris --- drivers/mtd/inftlcore.c | 2 +- drivers/mtd/nftlcore.c | 2 +- drivers/mtd/ssfdc.c | 2 +- drivers/mtd/tests/nandbiterrs.c | 2 +- drivers/mtd/tests/oobtest.c | 2 +- drivers/mtd/tests/pagetest.c | 2 +- drivers/mtd/tests/subpagetest.c | 2 +- include/linux/mtd/mtd.h | 5 +++++ 8 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index 3af351484098..b66b541877f0 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -50,7 +50,7 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) 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 c5f4ebf4b384..46f27de018c3 100644 --- a/drivers/mtd/nftlcore.c +++ b/drivers/mtd/nftlcore.c @@ -50,7 +50,7 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) 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 ab2a52a039c3..daf82ba7aba0 100644 --- a/drivers/mtd/ssfdc.c +++ b/drivers/mtd/ssfdc.c @@ -290,7 +290,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) 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 3cd3aabbe1cd..6f976159611f 100644 --- a/drivers/mtd/tests/nandbiterrs.c +++ b/drivers/mtd/tests/nandbiterrs.c @@ -349,7 +349,7 @@ static int __init mtd_nandbiterrs_init(void) 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 ff35c465bfee..2e9e2d11f204 100644 --- a/drivers/mtd/tests/oobtest.c +++ b/drivers/mtd/tests/oobtest.c @@ -289,7 +289,7 @@ static int __init mtd_oobtest_init(void) 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 44b96e999ad4..ed2d3f656fd2 100644 --- a/drivers/mtd/tests/pagetest.c +++ b/drivers/mtd/tests/pagetest.c @@ -353,7 +353,7 @@ static int __init mtd_pagetest_init(void) 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 e2c0adf24cfc..a876371ad410 100644 --- a/drivers/mtd/tests/subpagetest.c +++ b/drivers/mtd/tests/subpagetest.c @@ -299,7 +299,7 @@ static int __init mtd_subpagetest_init(void) 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 f9bfe526d310..88409b813418 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -354,6 +354,11 @@ static inline int mtd_has_oob(const struct mtd_info *mtd) 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; -- 2.20.1