diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_qdio.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_qdio.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 9c5b8498090..0dfaa176af7 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -28,7 +28,7 @@ static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal) return 0; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbale(struct zfcp_qdio_queue *q, int sbal_idx, int sbale_idx) { return &q->sbal[sbal_idx]->element[sbale_idx]; @@ -145,7 +145,7 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, { struct zfcp_adapter *adapter = (struct zfcp_adapter *) parm; struct zfcp_qdio_queue *queue = &adapter->resp_q; - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int sbal_idx, sbale_idx, sbal_no; if (unlikely(qdio_err)) { @@ -190,8 +190,7 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, * @fsf_req: pointer to struct fsf_req * Returns: pointer to qdio_buffer_element (SBALE) structure */ -volatile struct qdio_buffer_element * -zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) +struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) { return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, 0); } @@ -201,8 +200,7 @@ zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) * @fsf_req: pointer to struct fsf_req * Returns: pointer to qdio_buffer_element (SBALE) structure */ -volatile struct qdio_buffer_element * -zfcp_qdio_sbale_curr(struct zfcp_fsf_req *req) +struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *req) { return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, req->sbale_curr); @@ -216,10 +214,10 @@ static void zfcp_qdio_sbal_limit(struct zfcp_fsf_req *fsf_req, int max_sbals) % QDIO_MAX_BUFFERS_PER_Q; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbal_chain(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; /* set last entry flag in current SBALE of current SBAL */ sbale = zfcp_qdio_sbale_curr(fsf_req); @@ -250,7 +248,7 @@ zfcp_qdio_sbal_chain(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) return sbale; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbale_next(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) { if (fsf_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL) @@ -273,7 +271,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, unsigned int sbtype, void *start_addr, unsigned int total_length) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; unsigned long remaining, length; void *addr; @@ -308,7 +306,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype, struct scatterlist *sg, int max_sbals) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int retval, bytes = 0; /* figure out last allowed SBAL */ @@ -345,7 +343,7 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req) int first = fsf_req->sbal_first; int count = fsf_req->sbal_number; int retval, pci, pci_batch; - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; /* acknowledgements for transferred buffers */ pci_batch = req_q->pci_batch + count; @@ -419,7 +417,7 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) struct zfcp_qdio_queue *req_q; int first, count; - if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) + if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) return; /* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */ @@ -451,10 +449,10 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) */ int zfcp_qdio_open(struct zfcp_adapter *adapter) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int cc; - if (atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) + if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP) return -EIO; if (qdio_establish(&adapter->qdio_init_data)) |