diff options
Diffstat (limited to 'cryptodev_cipher.c')
| -rw-r--r-- | cryptodev_cipher.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/cryptodev_cipher.c b/cryptodev_cipher.c index 97998fe..60a55db 100644 --- a/cryptodev_cipher.c +++ b/cryptodev_cipher.c @@ -148,7 +148,11 @@ static inline int waitfor (struct cryptodev_result* cr, ssize_t ret) case -EINPROGRESS: case -EBUSY: wait_for_completion(&cr->completion); - /* no error from wait_for_completion */ + /* At this point we known for sure the request has finished, + * because wait_for_completion above was not interruptible. + * This is important because otherwise hardware or driver + * might try to access memory which will be freed or reused for + * another request. */ if (cr->err) { dprintk(0,KERN_ERR,"error from async request: %zd \n", ret); |