From f18d11163e4ea523aff489721db5de752fe062bf Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Wed, 1 Jul 2015 21:35:49 +0900 Subject: mtd: fix false positive "Offset exceeds device limit" error Since commit 09c3280754f8 (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 Acked-by: Scott Wood Signed-off-by: Masahiro Yamada --- include/linux/mtd/mtd.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 33669da4ed..552d4d623f 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -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__ */ -- cgit