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mtd: fix false positive "Offset exceeds device limit" error

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Since commit 09c3280754 (mtd, nand: Move common functions from
cmd_nand.c to common place), NAND commands would not work at all
on large devices.

    => nand read 80000000 10000 10000

    NAND read: Offset exceeds device limit
    => nand erase 100000 100000

    NAND erase: Offset exceeds device limit

The type of the "size" of "struct mtd_info" is uint64_t, while
mtd_arg_off_size() and mtd_arg_off() treat chipsize as int type.
The chipsize is wrapped around if the argument is given with 2GB
or larger.

Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada
2015-07-01 21:35:49 +09:00
committed by Tom Rini
parent fa31377ef0
commit f18d11163e
2 changed files with 6 additions and 4 deletions
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5
include/linux/mtd/mtd.h
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@@ -484,8 +484,9 @@ int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
int del_mtd_partitions(struct mtd_info *);
int mtd_arg_off(const char *arg, int *idx, loff_t *off, loff_t *size,
loff_t *maxsize, int devtype, int chipsize);
loff_t *maxsize, int devtype, uint64_t chipsize);
int mtd_arg_off_size(int argc, char *const argv[], int *idx, loff_t *off,
loff_t *size, loff_t *maxsize, int devtype, int chipsize);
loff_t *size, loff_t *maxsize, int devtype,
uint64_t chipsize);
#endif
#endif /* __MTD_MTD_H__ */