mirror of https://gitee.com/openkylin/linux.git
mtd: Fix check in mtd_unpoint()
The code checks that ->_point is not NULL, but we should actually check ->_unpoint value which is dereferenced a few lines after the check. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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@ -991,7 +991,7 @@ EXPORT_SYMBOL_GPL(mtd_point);
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/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
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int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
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{
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if (!mtd->_point)
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if (!mtd->_unpoint)
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return -EOPNOTSUPP;
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if (from < 0 || from >= mtd->size || len > mtd->size - from)
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return -EINVAL;
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