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authorRichard Weinberger <richard@nod.at>2016-09-21 11:44:41 +0200
committerBoris Brezillon <boris.brezillon@free-electrons.com>2016-09-23 09:35:16 +0200
commitd44154f969a44269a9288c274c1c2fd9e85df8a5 (patch)
treee7988379fcd6d1a917db7139f11f4bac95fc46f9 /drivers/mtd
parenta9843193ce00b7f83432abe0815d03ffbeaf6ecf (diff)
downloadlinux-d44154f969a44269a9288c274c1c2fd9e85df8a5.tar.bz2
mtd: nand: Provide nand_cleanup() function to free NAND related resources
Provide a nand_cleanup() function to free all nand related resources without unregistering the mtd device. This should allow drivers to call mtd_device_unregister() and handle its return value and still being able to cleanup all nand related resources. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Daniel Walter <dwalter@sigma-star.at> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/nand_base.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index c06146941e16..7a00245ebada 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -4799,19 +4799,15 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
EXPORT_SYMBOL(nand_scan);
/**
- * nand_release - [NAND Interface] Free resources held by the NAND device
- * @mtd: MTD device structure
+ * nand_cleanup - [NAND Interface] Free resources held by the NAND device
+ * @chip: NAND chip object
*/
-void nand_release(struct mtd_info *mtd)
+void nand_cleanup(struct nand_chip *chip)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
-
if (chip->ecc.mode == NAND_ECC_SOFT &&
chip->ecc.algo == NAND_ECC_BCH)
nand_bch_free((struct nand_bch_control *)chip->ecc.priv);
- mtd_device_unregister(mtd);
-
nand_release_data_interface(chip);
/* Free bad block table memory */
@@ -4824,6 +4820,18 @@ void nand_release(struct mtd_info *mtd)
& NAND_BBT_DYNAMICSTRUCT)
kfree(chip->badblock_pattern);
}
+EXPORT_SYMBOL_GPL(nand_cleanup);
+
+/**
+ * nand_release - [NAND Interface] Unregister the MTD device and free resources
+ * held by the NAND device
+ * @mtd: MTD device structure
+ */
+void nand_release(struct mtd_info *mtd)
+{
+ mtd_device_unregister(mtd);
+ nand_cleanup(mtd_to_nand(mtd));
+}
EXPORT_SYMBOL_GPL(nand_release);
MODULE_LICENSE("GPL");