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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-22 18:36:49 (GMT) |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-22 18:36:49 (GMT) |
commit | e6f194d8f6f50da6837af637b2fd839c34185f7a (patch) | |
tree | f3c479a2bc24d49a150ff183e2614ee0f76cb366 /drivers/s390/scsi | |
parent | 7578634990fb47cc30083fbd812689aa6deacfc0 (diff) | |
parent | b91421749a1840148d8c81637c03c0ace3f35269 (diff) | |
download | linux-fsl-qoriq-e6f194d8f6f50da6837af637b2fd839c34185f7a.tar.xz |
Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (60 commits)
[SCSI] libsas: make ATA functions selectable by a config option
[SCSI] bsg: unexport sg v3 helper functions
[SCSI] bsg: fix bsg_unregister_queue
[SCSI] bsg: make class backlinks
[SCSI] 3w-9xxx: add support for 9690SA
[SCSI] bsg: fix bsg_register_queue error path
[SCSI] ESP: Increase ESP_BUS_TIMEOUT to 275.
[SCSI] libsas: fix scr_read/write users and update the libata documentation
[SCSI] mpt fusion: update Kconfig help
[SCSI] scsi_transport_sas: add destructor for bsg
[SCSI] iscsi_tcp: buggered kmalloc()
[SCSI] qla2xxx: Update version number to 8.02.00-k2.
[SCSI] qla2xxx: Add ISP25XX support.
[SCSI] qla2xxx: Use pci_try_set_mwi().
[SCSI] qla2xxx: Use PCI-X/PCI-Express read control interfaces.
[SCSI] qla2xxx: Re-factor isp_operations to static structures.
[SCSI] qla2xxx: Validate mid-layer 'underflow' during check-condition handling.
[SCSI] qla2xxx: Correct setting of 'current' and 'supported' speeds during FDMI registration.
[SCSI] qla2xxx: Generalize iIDMA support.
[SCSI] qla2xxx: Generalize FW-Interface-2 support.
...
Diffstat (limited to 'drivers/s390/scsi')
-rw-r--r-- | drivers/s390/scsi/zfcp_aux.c | 9 | ||||
-rw-r--r-- | drivers/s390/scsi/zfcp_def.h | 1 | ||||
-rw-r--r-- | drivers/s390/scsi/zfcp_erp.c | 3 | ||||
-rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 2 | ||||
-rw-r--r-- | drivers/s390/scsi/zfcp_qdio.c | 113 |
5 files changed, 38 insertions, 90 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 9726261..ab5ec1fe 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -1526,15 +1526,12 @@ zfcp_gid_pn_buffers_alloc(struct zfcp_gid_pn_data **gid_pn, mempool_t *pool) * zfcp_gid_pn_buffers_free - free buffers for GID_PN nameserver request * @gid_pn: pointer to struct zfcp_gid_pn_data which has to be freed */ -static void -zfcp_gid_pn_buffers_free(struct zfcp_gid_pn_data *gid_pn) +static void zfcp_gid_pn_buffers_free(struct zfcp_gid_pn_data *gid_pn) { - if ((gid_pn->ct.pool != 0)) + if (gid_pn->ct.pool) mempool_free(gid_pn, gid_pn->ct.pool); else - kfree(gid_pn); - - return; + kfree(gid_pn); } /** diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 2264963..b36dfc4 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -126,6 +126,7 @@ zfcp_address_to_sg(void *address, struct scatterlist *list) #define ZFCP_MIN_OUTPUT_THRESHOLD 1 /* ignored by QDIO layer */ #define QDIO_SCSI_QFMT 1 /* 1 for FSF */ +#define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer)) /********************* FSF SPECIFIC DEFINES *********************************/ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 4e7cb6d..d8cd75c 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1626,7 +1626,7 @@ zfcp_erp_schedule_work(struct zfcp_unit *unit) { struct zfcp_erp_add_work *p; - p = kmalloc(sizeof(*p), GFP_KERNEL); + p = kzalloc(sizeof(*p), GFP_KERNEL); if (!p) { ZFCP_LOG_NORMAL("error: Out of resources. Could not register " "the FCP-LUN 0x%Lx connected to " @@ -1639,7 +1639,6 @@ zfcp_erp_schedule_work(struct zfcp_unit *unit) } zfcp_unit_get(unit); - memset(p, 0, sizeof(*p)); atomic_set_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status); INIT_WORK(&p->work, zfcp_erp_scsi_scan); p->unit = unit; diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 0eb31e1..b240800 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -1930,7 +1930,7 @@ static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) skip_fsfstatus: send_els->status = retval; - if (send_els->handler != 0) + if (send_els->handler) send_els->handler(send_els->handler_data); return retval; diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index bdf5782..c408bad 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -47,103 +47,56 @@ static int zfcp_qdio_handler_error_check(struct zfcp_adapter *, #define ZFCP_LOG_AREA ZFCP_LOG_AREA_QDIO /* - * Allocates BUFFER memory to each of the pointers of the qdio_buffer_t - * array in the adapter struct. - * Cur_buf is the pointer array and count can be any number of required - * buffers, the page-fitting arithmetic is done entirely within this funciton. + * Frees BUFFER memory for each of the pointers of the struct qdio_buffer array + * in the adapter struct sbuf is the pointer array. * - * returns: number of buffers allocated * locks: must only be called with zfcp_data.config_sema taken */ -static int -zfcp_qdio_buffers_enqueue(struct qdio_buffer **cur_buf, int count) +static void +zfcp_qdio_buffers_dequeue(struct qdio_buffer **sbuf) { - int buf_pos; - int qdio_buffers_per_page; - int page_pos = 0; - struct qdio_buffer *first_in_page = NULL; - - qdio_buffers_per_page = PAGE_SIZE / sizeof (struct qdio_buffer); - ZFCP_LOG_TRACE("buffers_per_page=%d\n", qdio_buffers_per_page); - - for (buf_pos = 0; buf_pos < count; buf_pos++) { - if (page_pos == 0) { - cur_buf[buf_pos] = (struct qdio_buffer *) - get_zeroed_page(GFP_KERNEL); - if (cur_buf[buf_pos] == NULL) { - ZFCP_LOG_INFO("error: allocation of " - "QDIO buffer failed \n"); - goto out; - } - first_in_page = cur_buf[buf_pos]; - } else { - cur_buf[buf_pos] = first_in_page + page_pos; + int pos; - } - /* was initialised to zero */ - page_pos++; - page_pos %= qdio_buffers_per_page; - } - out: - return buf_pos; + for (pos = 0; pos < QDIO_MAX_BUFFERS_PER_Q; pos += QBUFF_PER_PAGE) + free_page((unsigned long) sbuf[pos]); } /* - * Frees BUFFER memory for each of the pointers of the struct qdio_buffer array - * in the adapter struct cur_buf is the pointer array and count can be any - * number of buffers in the array that should be freed starting from buffer 0 + * Allocates BUFFER memory to each of the pointers of the qdio_buffer_t + * array in the adapter struct. + * Cur_buf is the pointer array * + * returns: zero on success else -ENOMEM * locks: must only be called with zfcp_data.config_sema taken */ -static void -zfcp_qdio_buffers_dequeue(struct qdio_buffer **cur_buf, int count) +static int +zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbuf) { - int buf_pos; - int qdio_buffers_per_page; - - qdio_buffers_per_page = PAGE_SIZE / sizeof (struct qdio_buffer); - ZFCP_LOG_TRACE("buffers_per_page=%d\n", qdio_buffers_per_page); + int pos; - for (buf_pos = 0; buf_pos < count; buf_pos += qdio_buffers_per_page) - free_page((unsigned long) cur_buf[buf_pos]); - return; + for (pos = 0; pos < QDIO_MAX_BUFFERS_PER_Q; pos += QBUFF_PER_PAGE) { + sbuf[pos] = (struct qdio_buffer *) get_zeroed_page(GFP_KERNEL); + if (!sbuf[pos]) { + zfcp_qdio_buffers_dequeue(sbuf); + return -ENOMEM; + } + } + for (pos = 0; pos < QDIO_MAX_BUFFERS_PER_Q; pos++) + if (pos % QBUFF_PER_PAGE) + sbuf[pos] = sbuf[pos - 1] + 1; + return 0; } /* locks: must only be called with zfcp_data.config_sema taken */ int zfcp_qdio_allocate_queues(struct zfcp_adapter *adapter) { - int buffer_count; - int retval = 0; + int ret; - buffer_count = - zfcp_qdio_buffers_enqueue(&(adapter->request_queue.buffer[0]), - QDIO_MAX_BUFFERS_PER_Q); - if (buffer_count < QDIO_MAX_BUFFERS_PER_Q) { - ZFCP_LOG_DEBUG("only %d QDIO buffers allocated for request " - "queue\n", buffer_count); - zfcp_qdio_buffers_dequeue(&(adapter->request_queue.buffer[0]), - buffer_count); - retval = -ENOMEM; - goto out; - } - - buffer_count = - zfcp_qdio_buffers_enqueue(&(adapter->response_queue.buffer[0]), - QDIO_MAX_BUFFERS_PER_Q); - if (buffer_count < QDIO_MAX_BUFFERS_PER_Q) { - ZFCP_LOG_DEBUG("only %d QDIO buffers allocated for response " - "queue", buffer_count); - zfcp_qdio_buffers_dequeue(&(adapter->response_queue.buffer[0]), - buffer_count); - ZFCP_LOG_TRACE("freeing request_queue buffers\n"); - zfcp_qdio_buffers_dequeue(&(adapter->request_queue.buffer[0]), - QDIO_MAX_BUFFERS_PER_Q); - retval = -ENOMEM; - goto out; - } - out: - return retval; + ret = zfcp_qdio_buffers_enqueue(adapter->request_queue.buffer); + if (ret) + return ret; + return zfcp_qdio_buffers_enqueue(adapter->response_queue.buffer); } /* locks: must only be called with zfcp_data.config_sema taken */ @@ -151,12 +104,10 @@ void zfcp_qdio_free_queues(struct zfcp_adapter *adapter) { ZFCP_LOG_TRACE("freeing request_queue buffers\n"); - zfcp_qdio_buffers_dequeue(&(adapter->request_queue.buffer[0]), - QDIO_MAX_BUFFERS_PER_Q); + zfcp_qdio_buffers_dequeue(adapter->request_queue.buffer); ZFCP_LOG_TRACE("freeing response_queue buffers\n"); - zfcp_qdio_buffers_dequeue(&(adapter->response_queue.buffer[0]), - QDIO_MAX_BUFFERS_PER_Q); + zfcp_qdio_buffers_dequeue(adapter->response_queue.buffer); } int |