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-rw-r--r--miscutils/nandwrite.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/miscutils/nandwrite.c b/miscutils/nandwrite.c
index d0e4397fb..8df0fdc81 100644
--- a/miscutils/nandwrite.c
+++ b/miscutils/nandwrite.c
@@ -72,6 +72,8 @@ int nandwrite_main(int argc UNUSED_PARAM, char **argv)
xioctl(fd, MEMGETINFO, &meminfo);
mtdoffset = bb_strtou(opt_s, NULL, 0);
+ if (errno)
+ bb_error_msg_and_die("invalid number '%s'", opt_s);
/* Pull it into a CPU register (hopefully) - smaller code that way */
meminfo_writesize = meminfo.writesize;