diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/maps/pxa2xx-flash.c | 2 | ||||
| -rw-r--r-- | drivers/mtd/mtdchar.c | 2 | ||||
| -rw-r--r-- | drivers/mtd/nand/omap2.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/onenand/omap2.c | 3 | ||||
| -rw-r--r-- | drivers/mtd/ubi/io.c | 37 | ||||
| -rw-r--r-- | drivers/mtd/ubi/scan.c | 20 |
6 files changed, 43 insertions, 22 deletions
diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c index dd90880048cf..d8ae634d347e 100644 --- a/drivers/mtd/maps/pxa2xx-flash.c +++ b/drivers/mtd/maps/pxa2xx-flash.c @@ -51,7 +51,7 @@ struct pxa2xx_flash_info { static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; -static int __init pxa2xx_flash_probe(struct platform_device *pdev) +static int __devinit pxa2xx_flash_probe(struct platform_device *pdev) { struct flash_platform_data *flash = pdev->dev.platform_data; struct pxa2xx_flash_info *info; diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 4759d827e8c7..f511dd15fd31 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -1201,7 +1201,7 @@ err_unregister_chdev: static void __exit cleanup_mtdchar(void) { unregister_mtd_user(&mtdchar_notifier); - mntput(mtd_inode_mnt); + mntput_long(mtd_inode_mnt); unregister_filesystem(&mtd_inodefs_type); __unregister_chrdev(MTD_CHAR_MAJOR, 0, 1 << MINORBITS, "mtd"); } diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index cd41c58b5bbd..15682ec8530e 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -7,7 +7,6 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ -#define CONFIG_MTD_NAND_OMAP_HWECC #include <linux/platform_device.h> #include <linux/dma-mapping.h> diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c index 9f322f1a7f22..d0894ca7798b 100644 --- a/drivers/mtd/onenand/omap2.c +++ b/drivers/mtd/onenand/omap2.c @@ -721,6 +721,9 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev) case 3: c->freq = 83; break; + case 4: + c->freq = 104; + break; } #ifdef CONFIG_MTD_PARTITIONS diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index c2960ac9f39c..811775aa8ee8 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -482,10 +482,17 @@ static int nor_erase_prepare(struct ubi_device *ubi, int pnum) uint32_t data = 0; struct ubi_vid_hdr vid_hdr; - addr = (loff_t)pnum * ubi->peb_size + ubi->vid_hdr_aloffset; + /* + * It is important to first invalidate the EC header, and then the VID + * header. Otherwise a power cut may lead to valid EC header and + * invalid VID header, in which case UBI will treat this PEB as + * corrupted and will try to preserve it, and print scary warnings (see + * the header comment in scan.c for more information). + */ + addr = (loff_t)pnum * ubi->peb_size; err = ubi->mtd->write(ubi->mtd, addr, 4, &written, (void *)&data); if (!err) { - addr -= ubi->vid_hdr_aloffset; + addr += ubi->vid_hdr_aloffset; err = ubi->mtd->write(ubi->mtd, addr, 4, &written, (void *)&data); if (!err) @@ -494,18 +501,24 @@ static int nor_erase_prepare(struct ubi_device *ubi, int pnum) /* * We failed to write to the media. This was observed with Spansion - * S29GL512N NOR flash. Most probably the eraseblock erasure was - * interrupted at a very inappropriate moment, so it became unwritable. - * In this case we probably anyway have garbage in this PEB. + * S29GL512N NOR flash. Most probably the previously eraseblock erasure + * was interrupted at a very inappropriate moment, so it became + * unwritable. In this case we probably anyway have garbage in this + * PEB. */ err1 = ubi_io_read_vid_hdr(ubi, pnum, &vid_hdr, 0); - if (err1 == UBI_IO_BAD_HDR_EBADMSG || err1 == UBI_IO_BAD_HDR) - /* - * The VID header is corrupted, so we can safely erase this - * PEB and not afraid that it will be treated as a valid PEB in - * case of an unclean reboot. - */ - return 0; + if (err1 == UBI_IO_BAD_HDR_EBADMSG || err1 == UBI_IO_BAD_HDR) { + struct ubi_ec_hdr ec_hdr; + + err1 = ubi_io_read_ec_hdr(ubi, pnum, &ec_hdr, 0); + if (err1 == UBI_IO_BAD_HDR_EBADMSG || err1 == UBI_IO_BAD_HDR) + /* + * Both VID and EC headers are corrupted, so we can + * safely erase this PEB and not afraid that it will be + * treated as a valid PEB in case of an unclean reboot. + */ + return 0; + } /* * The PEB contains a valid VID header, but we cannot invalidate it. diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c index 3c631863bf40..79ca304fc4db 100644 --- a/drivers/mtd/ubi/scan.c +++ b/drivers/mtd/ubi/scan.c @@ -787,16 +787,15 @@ static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr, * erased, so it became unstable and corrupted, and should be * erased. */ - return 0; + err = 0; + goto out_unlock; } if (err) - return err; + goto out_unlock; - if (ubi_check_pattern(ubi->peb_buf1, 0xFF, ubi->leb_size)) { - mutex_unlock(&ubi->buf_mutex); - return 0; - } + if (ubi_check_pattern(ubi->peb_buf1, 0xFF, ubi->leb_size)) + goto out_unlock; ubi_err("PEB %d contains corrupted VID header, and the data does not " "contain all 0xFF, this may be a non-UBI PEB or a severe VID " @@ -806,8 +805,11 @@ static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr, pnum, ubi->leb_start, ubi->leb_size); ubi_dbg_print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, ubi->peb_buf1, ubi->leb_size, 1); + err = 1; + +out_unlock: mutex_unlock(&ubi->buf_mutex); - return 1; + return err; } /** @@ -951,6 +953,10 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si, * impossible to distinguish it from a PEB which just * contains garbage because of a power cut during erase * operation. So we just schedule this PEB for erasure. + * + * Besides, in case of NOR flash, we deliberatly + * corrupt both headers because NOR flash erasure is + * slow and can start from the end. */ err = 0; else |