mtd: return error code from mtd_unpoint

[linux-drm-fsl-dcu.git] / include / linux / mtd / mtd.h

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index e2e545616b2a58f505f964ab695880c44242f523..8c243117c0872eaa011f59d9cf03d9594a81a71e 100644 (file)
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -177,7 +177,7 @@ struct mtd_info {
        int (*_erase) (struct mtd_info *mtd, struct erase_info *instr);
        int (*_point) (struct mtd_info *mtd, loff_t from, size_t len,
                       size_t *retlen, void **virt, resource_size_t *phys);
-       void (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
+       int (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
        unsigned long (*_get_unmapped_area) (struct mtd_info *mtd,
                                             unsigned long len,
                                             unsigned long offset,
@@ -265,8 +265,10 @@ static inline int mtd_point(struct mtd_info *mtd, loff_t from, size_t len,
 }
 
 /* We probably shouldn't allow XIP if the unpoint isn't a NULL */
-static inline void mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static inline int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
+       if (!mtd->_point)
+               return -EOPNOTSUPP;
        return mtd->_unpoint(mtd, from, len);
 }