s390/crypt: fix missing unlock in ctr_paes_crypt on error path



The ctr mode of protected key aes uses the ctrblk page if the
ctrblk_lock could be acquired. If the protected key has to be
reestablished and this operation fails the unlock for the
ctrblk_lock is missing. Add it.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent 2d6be4ab

arch/s390/crypto/paes_s390.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -474,10 +474,13 @@ static int ctr_paes_crypt(struct blkcipher_desc *desc, unsigned long modifier,
		ret = blkcipher_walk_done(desc, walk, nbytes - n);
		}
		if (k < n) {
		if (__ctr_paes_set_key(ctx) != 0)
		if (__ctr_paes_set_key(ctx) != 0) {
		if (locked)
		spin_unlock(&ctrblk_lock);
		return blkcipher_walk_done(desc, walk, -EIO);
		}
		}
		}
		if (locked)
		spin_unlock(&ctrblk_lock);
		/*