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Subject[PATCH v4 17/58] mtd: nand: docg4: use the mtd instance embedded in struct nand_chip
Date
struct nand_chip now embeds an mtd device. Make use of this mtd instance.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/mtd/nand/docg4.c | 23 ++++++++++++-----------
1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/mtd/nand/docg4.c b/drivers/mtd/nand/docg4.c
index da93d7f..cb6efad 100644
--- a/drivers/mtd/nand/docg4.c
+++ b/drivers/mtd/nand/docg4.c
@@ -1305,14 +1305,14 @@ static int __init probe_docg4(struct platform_device *pdev)
return -EIO;
}

- len = sizeof(struct mtd_info) + sizeof(struct nand_chip) +
- sizeof(struct docg4_priv);
- mtd = kzalloc(len, GFP_KERNEL);
- if (mtd == NULL) {
+ len = sizeof(struct nand_chip) + sizeof(struct docg4_priv);
+ nand = kzalloc(len, GFP_KERNEL);
+ if (nand == NULL) {
retval = -ENOMEM;
- goto fail;
+ goto fail_unmap;
}
- nand = (struct nand_chip *) (mtd + 1);
+
+ mtd = nand_to_mtd(nand);
doc = (struct docg4_priv *) (nand + 1);
mtd->priv = nand;
nand->priv = doc;
@@ -1354,16 +1354,17 @@ static int __init probe_docg4(struct platform_device *pdev)
return 0;

fail:
- iounmap(virtadr);
- if (mtd) {
+ if (nand) {
/* re-declarations avoid compiler warning */
- struct nand_chip *nand = mtd_to_nand(mtd);
struct docg4_priv *doc = nand->priv;
nand_release(mtd); /* deletes partitions and mtd devices */
free_bch(doc->bch);
- kfree(mtd);
+ kfree(nand);
}

+fail_unmap:
+ iounmap(virtadr);
+
return retval;
}

@@ -1372,7 +1373,7 @@ static int __exit cleanup_docg4(struct platform_device *pdev)
struct docg4_priv *doc = platform_get_drvdata(pdev);
nand_release(doc->mtd);
free_bch(doc->bch);
- kfree(doc->mtd);
+ kfree(mtd_to_nand(doc->mtd));
iounmap(doc->virtadr);
return 0;
}
--
2.1.4


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