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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>
This commit is contained in:
Boris Brezillon 2017-06-25 20:22:57 +02:00 committed by Brian Norris
parent c169e3d3c0
commit b9504247a6
1 changed files with 1 additions and 1 deletions
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2
drivers/mtd/mtdcore.c
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@ -991,7 +991,7 @@ EXPORT_SYMBOL_GPL(mtd_point);
/* We probably shouldn't allow XIP if the unpoint isn't a NULL */ /* We probably shouldn't allow XIP if the unpoint isn't a NULL */
int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len) int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{ {
if (!mtd->_point) if (!mtd->_unpoint)
return -EOPNOTSUPP; return -EOPNOTSUPP;
if (from < 0 || from >= mtd->size || len > mtd->size - from) if (from < 0 || from >= mtd->size || len > mtd->size - from)
return -EINVAL; return -EINVAL;