diff options
Diffstat (limited to 'drivers/mtd/mtdchar.c')
| -rw-r--r-- | drivers/mtd/mtdchar.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 608f7af679c..e75ec5fe776 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -512,14 +512,36 @@ static int mtd_ioctl(struct inode *inode, struct file *file, break; } + /* Legacy interface */ case MEMGETOOBSEL: { - if (copy_to_user(argp, mtd->oobinfo, - sizeof(struct nand_oobinfo))) + struct nand_oobinfo oi; + + if (!mtd->ecclayout) + return -EOPNOTSUPP; + if (mtd->ecclayout->eccbytes > ARRAY_SIZE(oi.eccpos)) + return -EINVAL; + + oi.useecc = MTD_NANDECC_AUTOPLACE; + memcpy(&oi.eccpos, mtd->ecclayout->eccpos, sizeof(oi.eccpos)); + memcpy(&oi.oobfree, mtd->ecclayout->oobfree, + sizeof(oi.oobfree)); + + if (copy_to_user(argp, &oi, sizeof(struct nand_oobinfo))) return -EFAULT; break; } + case ECCGETLAYOUT: + + if (!mtd->ecclayout) + return -EOPNOTSUPP; + + if (copy_to_user(argp, &mtd->ecclayout, + sizeof(struct nand_ecclayout))) + return -EFAULT; + break; + case MEMGETBADBLOCK: { loff_t offs; |