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mtd: nand: Provide nand_cleanup() function to free NAND related resources

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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 <[email protected]>
Signed-off-by: Daniel Walter <[email protected]>
Signed-off-by: Boris Brezillon <[email protected]>
This commit is contained in:
Richard Weinberger 2016-09-21 11:44:41 +02:00 • committed by Boris Brezillon
commit d44154f969
2 changed files with 19 additions and 8 deletions
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22
drivers/mtd/nand/nand_base.c
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@ -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");