diff options
Diffstat (limited to 'drivers/s390/block/dasd_fba.c')
| -rw-r--r-- | drivers/s390/block/dasd_fba.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index a3eb6fd1467..597c6ffdb9f 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -122,20 +122,20 @@ dasd_fba_check_characteristics(struct dasd_device *device) struct dasd_block *block; struct dasd_fba_private *private; struct ccw_device *cdev = device->cdev; - void *rdc_data; int rc; private = (struct dasd_fba_private *) device->private; - if (private == NULL) { - private = kzalloc(sizeof(struct dasd_fba_private), - GFP_KERNEL | GFP_DMA); - if (private == NULL) { + if (!private) { + private = kzalloc(sizeof(*private), GFP_KERNEL | GFP_DMA); + if (!private) { dev_warn(&device->cdev->dev, "Allocating memory for private DASD " "data failed\n"); return -ENOMEM; } device->private = (void *) private; + } else { + memset(private, 0, sizeof(*private)); } block = dasd_alloc_block(); if (IS_ERR(block)) { @@ -150,8 +150,8 @@ dasd_fba_check_characteristics(struct dasd_device *device) block->base = device; /* Read Device Characteristics */ - rdc_data = (void *) &(private->rdc_data); - rc = dasd_generic_read_dev_chars(device, "FBA ", &rdc_data, 32); + rc = dasd_generic_read_dev_chars(device, "FBA ", &private->rdc_data, + 32); if (rc) { DBF_EVENT(DBF_WARNING, "Read device characteristics returned " "error %d for device: %s", @@ -270,8 +270,9 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, return ERR_PTR(-EINVAL); blksize = block->bp_block; /* Calculate record id of first and last block. */ - first_rec = req->sector >> block->s2b_shift; - last_rec = (req->sector + req->nr_sectors - 1) >> block->s2b_shift; + first_rec = blk_rq_pos(req) >> block->s2b_shift; + last_rec = + (blk_rq_pos(req) + blk_rq_sectors(req) - 1) >> block->s2b_shift; /* Check struct bio and count the number of blocks for the request. */ count = 0; cidaw = 0; @@ -309,7 +310,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, ccw = cqr->cpaddr; /* First ccw is define extent. */ define_extent(ccw++, cqr->data, rq_data_dir(req), - block->bp_block, req->sector, req->nr_sectors); + block->bp_block, blk_rq_pos(req), blk_rq_sectors(req)); /* Build locate_record + read/write ccws. */ idaws = (unsigned long *) (cqr->data + sizeof(struct DE_fba_data)); LO_data = (struct LO_fba_data *) (idaws + cidaw); @@ -603,8 +604,14 @@ static struct dasd_discipline dasd_fba_discipline = { static int __init dasd_fba_init(void) { + int ret; + ASCEBC(dasd_fba_discipline.ebcname, 4); - return ccw_driver_register(&dasd_fba_driver); + ret = ccw_driver_register(&dasd_fba_driver); + if (!ret) + wait_for_device_probe(); + + return ret; } static void __exit |