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Commit 9e6e7c74 authored by Dan Carpenter's avatar Dan Carpenter Committed by Martin Schwidefsky
Browse files

s390/crypto: unlock on error in prng_tdes_read() 



We added some new locking but forgot to unlock on error.

Fixes: 57127645 ("s390/zcrypt: Introduce new SHA-512 based Pseudo Random Generator.")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent e32eae10

arch/s390/crypto/prng.c

+4 −2
Original line number Diff line number Diff line
@@ -507,8 +507,10 @@ static ssize_t prng_tdes_read(struct file *file, char __user *ubuf, 
		prng_data->prngws.byte_counter += n;

		prng_data->prngws.reseed_counter += n;



		if (copy_to_user(ubuf, prng_data->buf, chunk))

			return -EFAULT;

		if (copy_to_user(ubuf, prng_data->buf, chunk)) {

			ret = -EFAULT;

			break;

		}



		nbytes -= chunk;

		ret += chunk;