diff options
Diffstat (limited to 'drivers/s390/block/dasd_eckd.c')
| -rw-r--r-- | drivers/s390/block/dasd_eckd.c | 50 |
1 files changed, 31 insertions, 19 deletions
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index cb52da033f06..cf0cfdba1244 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -1097,20 +1097,20 @@ dasd_eckd_check_characteristics(struct dasd_device *device) { struct dasd_eckd_private *private; struct dasd_block *block; - void *rdc_data; int is_known, rc; private = (struct dasd_eckd_private *) device->private; - if (private == NULL) { - private = kzalloc(sizeof(struct dasd_eckd_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)); } /* Invalidate status of initial analysis. */ private->init_cqr_status = -1; @@ -1161,9 +1161,8 @@ dasd_eckd_check_characteristics(struct dasd_device *device) goto out_err3; /* Read Device Characteristics */ - rdc_data = (void *) &(private->rdc_data); - memset(rdc_data, 0, sizeof(rdc_data)); - rc = dasd_generic_read_dev_chars(device, "ECKD", &rdc_data, 64); + rc = dasd_generic_read_dev_chars(device, "ECKD", &private->rdc_data, + 64); if (rc) { DBF_EVENT(DBF_WARNING, "Read device characteristics failed, rc=%d for " @@ -1183,7 +1182,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device) private->rdc_data.dev_model, private->rdc_data.cu_type, private->rdc_data.cu_model.model, - private->real_cyl, + private->real_cyl, private->rdc_data.trk_per_cyl, private->rdc_data.sec_per_trk); return 0; @@ -2336,9 +2335,10 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev, { int tpm, cmdrtd, cmdwtd; int use_prefix; - - struct dasd_eckd_private *private; +#if defined(CONFIG_64BIT) int fcx_in_css, fcx_in_gneq, fcx_in_features; +#endif + struct dasd_eckd_private *private; struct dasd_device *basedev; sector_t first_rec, last_rec; sector_t first_trk, last_trk; @@ -2354,18 +2354,22 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev, blksize = block->bp_block; blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize); /* Calculate record id of first and last block. */ - first_rec = first_trk = req->sector >> block->s2b_shift; + first_rec = first_trk = blk_rq_pos(req) >> block->s2b_shift; first_offs = sector_div(first_trk, blk_per_trk); last_rec = last_trk = - (req->sector + req->nr_sectors - 1) >> block->s2b_shift; + (blk_rq_pos(req) + blk_rq_sectors(req) - 1) >> block->s2b_shift; last_offs = sector_div(last_trk, blk_per_trk); cdlspecial = (private->uses_cdl && first_rec < 2*blk_per_trk); - /* is transport mode supported ? */ + /* is transport mode supported? */ +#if defined(CONFIG_64BIT) fcx_in_css = css_general_characteristics.fcx; fcx_in_gneq = private->gneq->reserved2[7] & 0x04; fcx_in_features = private->features.feature[40] & 0x80; tpm = fcx_in_css && fcx_in_gneq && fcx_in_features; +#else + tpm = 0; +#endif /* is read track data and write track data in command mode supported? */ cmdrtd = private->features.feature[9] & 0x20; @@ -2420,7 +2424,7 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) private = (struct dasd_eckd_private *) cqr->block->base->private; blksize = cqr->block->bp_block; blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize); - recid = req->sector >> cqr->block->s2b_shift; + recid = blk_rq_pos(req) >> cqr->block->s2b_shift; ccw = cqr->cpaddr; /* Skip over define extent & locate record. */ ccw++; @@ -3013,8 +3017,9 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device, " I/O status report for device %s:\n", dev_name(&device->cdev->dev)); len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " in req: %p CS: 0x%02X DS: 0x%02X\n", req, - scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw)); + " in req: %p CS: 0x%02X DS: 0x%02X CC: 0x%02X RC: %d\n", + req, scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw), + scsw_cc(&irb->scsw), req->intrc); len += sprintf(page + len, KERN_ERR PRINTK_HEADER " device %s: Failing CCW: %p\n", dev_name(&device->cdev->dev), @@ -3115,9 +3120,10 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device, " I/O status report for device %s:\n", dev_name(&device->cdev->dev)); len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " in req: %p CS: 0x%02X DS: 0x%02X " + " in req: %p CS: 0x%02X DS: 0x%02X CC: 0x%02X RC: %d " "fcxs: 0x%02X schxs: 0x%02X\n", req, scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw), + scsw_cc(&irb->scsw), req->intrc, irb->scsw.tm.fcxs, irb->scsw.tm.schxs); len += sprintf(page + len, KERN_ERR PRINTK_HEADER " device %s: Failing TCW: %p\n", @@ -3273,8 +3279,14 @@ static struct dasd_discipline dasd_eckd_discipline = { static int __init dasd_eckd_init(void) { + int ret; + ASCEBC(dasd_eckd_discipline.ebcname, 4); - return ccw_driver_register(&dasd_eckd_driver); + ret = ccw_driver_register(&dasd_eckd_driver); + if (!ret) + wait_for_device_probe(); + + return ret; } static void __exit |