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authorMikulas Patocka <mpatocka@redhat.com>2017-04-27 11:49:33 -0400
committerMike Snitzer <snitzer@redhat.com>2017-04-27 12:10:16 -0400
commit6625d903253eb6f003849823e22d7b8de5bfb5b2 (patch)
tree32814302241023500154ce45da6472defd8c23d9 /drivers/md/dm-integrity.c
parente944e03e336f7ffa02aabc71291933d93dcd077c (diff)
downloadlinux-6625d903253eb6f003849823e22d7b8de5bfb5b2.tar.bz2
dm integrity: use hex2bin instead of open-coded variant
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-integrity.c')
-rw-r--r--drivers/md/dm-integrity.c14
1 files changed, 2 insertions, 12 deletions
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 0354af4cd713..023d3f8a51cc 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2496,8 +2496,6 @@ static int get_alg_and_key(const char *arg, struct alg_spec *a, char **error, ch
k = strchr(a->alg_string, ':');
if (k) {
- unsigned i;
-
*k = 0;
a->key_string = k + 1;
if (strlen(a->key_string) & 1)
@@ -2507,16 +2505,8 @@ static int get_alg_and_key(const char *arg, struct alg_spec *a, char **error, ch
a->key = kmalloc(a->key_size, GFP_KERNEL);
if (!a->key)
goto nomem;
- for (i = 0; i < a->key_size; i++) {
- char digit[3];
- digit[0] = a->key_string[i * 2];
- digit[1] = a->key_string[i * 2 + 1];
- digit[2] = 0;
- if (strspn(digit, "0123456789abcdefABCDEF") != 2)
- goto inval;
- if (kstrtou8(digit, 16, &a->key[i]))
- goto inval;
- }
+ if (hex2bin(a->key, a->key_string, a->key_size))
+ goto inval;
}
return 0;