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mtd: nand: docg4: use the mtd instance embedded in struct nand_chip

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struct nand_chip now embeds an mtd device. Make use of this mtd instance.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Boris BREZILLON 2015-12-10 09:00:01 +01:00 committed by Brian Norris
parent b0c423c7b6
commit 5d07379681
1 changed files with 12 additions and 11 deletions
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23
drivers/mtd/nand/docg4.c
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@ -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;
}