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mtd: nand: free vendor-specific resources in init failure paths

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If we fail any time after calling nand_detect(), then we don't call the
vendor-specific ->cleanup() callback, and we'll leak any resources the
vendor-specific code might have allocated.

Mark the "fix" against the first commit that started allocating anything
in ->init().

Fixes: 626994e074 ("mtd: nand: hynix: Add read-retry support for 1x nm MLC NANDs")
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Brian Norris 2017-05-01 17:04:53 -07:00 committed by Boris Brezillon
parent 0545c17202
commit 7877104929
1 changed files with 29 additions and 9 deletions
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38
drivers/mtd/nand/nand_base.c
View file

@ -4361,7 +4361,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,
/* Initialize the ->data_interface field. */
ret = nand_init_data_interface(chip);
if (ret)
return ret;
goto err_nand_init;
/*
* Setup the data interface correctly on the chip and controller side.
@ -4373,7 +4373,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,
*/
ret = nand_setup_data_interface(chip);
if (ret)
return ret;
goto err_nand_init;
nand_maf_id = chip->id.data[0];
nand_dev_id = chip->id.data[1];
@ -4404,6 +4404,12 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,
mtd->size = i * chip->chipsize;
return 0;
err_nand_init:
/* Free manufacturer priv data. */
nand_manufacturer_cleanup(chip);
return ret;
}
EXPORT_SYMBOL(nand_scan_ident);
@ -4574,18 +4580,23 @@ int nand_scan_tail(struct mtd_info *mtd)
/* New bad blocks should be marked in OOB, flash-based BBT, or both */
if (WARN_ON((chip->bbt_options & NAND_BBT_NO_OOB_BBM) &&
!(chip->bbt_options & NAND_BBT_USE_FLASH)))
return -EINVAL;
!(chip->bbt_options & NAND_BBT_USE_FLASH))) {
ret = -EINVAL;
goto err_ident;
}
if (invalid_ecc_page_accessors(chip)) {
pr_err("Invalid ECC page accessors setup\n");
return -EINVAL;
ret = -EINVAL;
goto err_ident;
}
if (!(chip->options & NAND_OWN_BUFFERS)) {
nbuf = kzalloc(sizeof(*nbuf), GFP_KERNEL);
if (!nbuf)
return -ENOMEM;
if (!nbuf) {
ret = -ENOMEM;
goto err_ident;
}
nbuf->ecccalc = kmalloc(mtd->oobsize, GFP_KERNEL);
if (!nbuf->ecccalc) {
@ -4608,8 +4619,10 @@ int nand_scan_tail(struct mtd_info *mtd)
chip->buffers = nbuf;
} else {
if (!chip->buffers)
return -ENOMEM;
if (!chip->buffers) {
ret = -ENOMEM;
goto err_ident;
}
}
/* Set the internal oob buffer location, just after the page data */
@ -4854,6 +4867,13 @@ err_free:
kfree(nbuf->ecccalc);
kfree(nbuf);
}
err_ident:
/* Clean up nand_scan_ident(). */
/* Free manufacturer priv data. */
nand_manufacturer_cleanup(chip);
return ret;
}
EXPORT_SYMBOL(nand_scan_tail);