forked from luck/tmp_suning_uos_patched
mtd: do not use mtd->lock_user_prot_reg directly
Instead, check the -EOPNOTSUPP return code of 'mtd_lock_user_prot_reg()'. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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@ -949,8 +949,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
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return -EINVAL;
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return -EINVAL;
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if (copy_from_user(&oinfo, argp, sizeof(oinfo)))
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if (copy_from_user(&oinfo, argp, sizeof(oinfo)))
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return -EFAULT;
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return -EFAULT;
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if (!mtd->lock_user_prot_reg)
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return -EOPNOTSUPP;
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ret = mtd_lock_user_prot_reg(mtd, oinfo.start, oinfo.length);
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ret = mtd_lock_user_prot_reg(mtd, oinfo.start, oinfo.length);
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break;
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break;
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}
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}
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@ -389,6 +389,8 @@ static inline int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to,
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static inline int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
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static inline int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
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size_t len)
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size_t len)
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{
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{
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if (!mtd->lock_user_prot_reg)
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return -EOPNOTSUPP;
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return mtd->lock_user_prot_reg(mtd, from, len);
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return mtd->lock_user_prot_reg(mtd, from, len);
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}
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}
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