diff options
Diffstat (limited to 'drivers/s390/char/raw3270.c')
| -rw-r--r-- | drivers/s390/char/raw3270.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index 37173cb0f5f5..c57694be9bd3 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -162,7 +162,8 @@ struct raw3270_request *raw3270_request_alloc(size_t size) /* * Setup ccw. */ - rq->ccw.cda = virt_to_dma32(rq->buffer); + if (rq->buffer) + rq->ccw.cda = virt_to_dma32(rq->buffer); rq->ccw.flags = CCW_FLAG_SLI; return rq; @@ -188,7 +189,8 @@ int raw3270_request_reset(struct raw3270_request *rq) return -EBUSY; rq->ccw.cmd_code = 0; rq->ccw.count = 0; - rq->ccw.cda = virt_to_dma32(rq->buffer); + if (rq->buffer) + rq->ccw.cda = virt_to_dma32(rq->buffer); rq->ccw.flags = CCW_FLAG_SLI; rq->rescnt = 0; rq->rc = 0; |