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MTD fixes for 4.12: 

NAND updates from Boris:
 """
 tango fixes:
  * Add missing MODULE_DEVICE_TABLE() in tango_nand.c
  * Update the number of corrected bitflips
 
 core fixes:
  * Fix a long standing memory leak in nand_scan_tail()
  * Fix several bugs introduced by the per-vendor init/detection
    infrastructure (introduced in 4.12)
  * Add a static specifier to nand_ooblayout_lp_hamming_ops definition
 """
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Merge tag 'for-linus-20170602' of git://git.infradead.org/linux-mtd

Pull MTD fixes from Brian Norris:
 "NAND updates from Boris:

  tango fixes:
   - Add missing MODULE_DEVICE_TABLE() in tango_nand.c
   - Update the number of corrected bitflips

  core fixes:
   - Fix a long standing memory leak in nand_scan_tail()
   - Fix several bugs introduced by the per-vendor init/detection
     infrastructure (introduced in 4.12)
   - Add a static specifier to nand_ooblayout_lp_hamming_ops definition"

* tag 'for-linus-20170602' of git://git.infradead.org/linux-mtd:
  mtd: nand: make nand_ooblayout_lp_hamming_ops static
  mtd: nand: tango: Update ecc_stats.corrected
  mtd: nand: tango: Export OF device ID table as module aliases
  mtd: nand: samsung: warn about un-parseable ECC info
  mtd: nand: free vendor-specific resources in init failure paths
  mtd: nand: drop unneeded module.h include
  mtd: nand: don't leak buffers when ->scan_bbt() fails
This commit is contained in:
Linus Torvalds 2017-06-03 08:42:30 -07:00
parent 104c08ba8e 05e97a9eda
commit cc54874055
4 changed files with 54 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/mtd/nand/nand_base.c
View File

@ -202,7 +202,7 @@ static int nand_ooblayout_free_lp_hamming(struct mtd_info *mtd, int section,
return 0;
}
const struct mtd_ooblayout_ops nand_ooblayout_lp_hamming_ops = {
static const struct mtd_ooblayout_ops nand_ooblayout_lp_hamming_ops = {
.ecc = nand_ooblayout_ecc_lp_hamming,
.free = nand_ooblayout_free_lp_hamming,
};
@ -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 */
@ -4842,7 +4855,11 @@ int nand_scan_tail(struct mtd_info *mtd)
return 0;
/* Build bad block table */
return chip->scan_bbt(mtd);
ret = chip->scan_bbt(mtd);
if (ret)
goto err_free;
return 0;
err_free:
if (nbuf) {
kfree(nbuf->databuf);
@ -4850,6 +4867,13 @@ int nand_scan_tail(struct mtd_info *mtd)
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);

1
drivers/mtd/nand/nand_ids.c
View File

@ -6,7 +6,6 @@
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/mtd/nand.h>
#include <linux/sizes.h>

3
drivers/mtd/nand/nand_samsung.c
View File

@ -84,6 +84,9 @@ static void samsung_nand_decode_id(struct nand_chip *chip)
case 7:
chip->ecc_strength_ds = 60;
break;
default:
WARN(1, "Could not decode ECC info");
chip->ecc_step_ds = 0;
}
}
} else {

23
drivers/mtd/nand/tango_nand.c
View File

@ -55,10 +55,10 @@
* byte 1 for other packets in the page (PKT_N, for N > 0)
* ERR_COUNT_PKT_N is the max error count over all but the first packet.
*/
#define DECODE_OK_PKT_0(v) ((v) & BIT(7))
#define DECODE_OK_PKT_N(v) ((v) & BIT(15))
#define ERR_COUNT_PKT_0(v) (((v) >> 0) & 0x3f)
#define ERR_COUNT_PKT_N(v) (((v) >> 8) & 0x3f)
#define DECODE_FAIL_PKT_0(v) (((v) & BIT(7)) == 0)
#define DECODE_FAIL_PKT_N(v) (((v) & BIT(15)) == 0)
/* Offsets relative to pbus_base */
#define PBUS_CS_CTRL 0x83c
@ -193,6 +193,8 @@ static int check_erased_page(struct nand_chip *chip, u8 *buf)
chip->ecc.strength);
if (res < 0)
mtd->ecc_stats.failed++;
else
mtd->ecc_stats.corrected += res;
bitflips = max(res, bitflips);
buf += pkt_size;
@ -202,9 +204,11 @@ static int check_erased_page(struct nand_chip *chip, u8 *buf)
return bitflips;
}
static int decode_error_report(struct tango_nfc *nfc)
static int decode_error_report(struct nand_chip *chip)
{
u32 status, res;
struct mtd_info *mtd = nand_to_mtd(chip);
struct tango_nfc *nfc = to_tango_nfc(chip->controller);
status = readl_relaxed(nfc->reg_base + NFC_XFER_STATUS);
if (status & PAGE_IS_EMPTY)
@ -212,10 +216,14 @@ static int decode_error_report(struct tango_nfc *nfc)
res = readl_relaxed(nfc->mem_base + ERROR_REPORT);
if (DECODE_OK_PKT_0(res) && DECODE_OK_PKT_N(res))
return max(ERR_COUNT_PKT_0(res), ERR_COUNT_PKT_N(res));
if (DECODE_FAIL_PKT_0(res) || DECODE_FAIL_PKT_N(res))
return -EBADMSG;
return -EBADMSG;
/* ERR_COUNT_PKT_N is max, not sum, but that's all we have */
mtd->ecc_stats.corrected +=
ERR_COUNT_PKT_0(res) + ERR_COUNT_PKT_N(res);
return max(ERR_COUNT_PKT_0(res), ERR_COUNT_PKT_N(res));
}
static void tango_dma_callback(void *arg)
@ -282,7 +290,7 @@ static int tango_read_page(struct mtd_info *mtd, struct nand_chip *chip,
if (err)
return err;
res = decode_error_report(nfc);
res = decode_error_report(chip);
if (res < 0) {
chip->ecc.read_oob_raw(mtd, chip, page);
res = check_erased_page(chip, buf);
@ -663,6 +671,7 @@ static const struct of_device_id tango_nand_ids[] = {
{ .compatible = "sigma,smp8758-nand" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tango_nand_ids);
static struct platform_driver tango_nand_driver = {
.probe = tango_nand_probe,