diff options
Diffstat (limited to 'drivers/s390/block/dasd_alias.c')
| -rw-r--r-- | drivers/s390/block/dasd_alias.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c index dc78a523a69f..f7e768d8ca76 100644 --- a/drivers/s390/block/dasd_alias.c +++ b/drivers/s390/block/dasd_alias.c @@ -6,20 +6,12 @@ * Author(s): Stefan Weinhuber <wein@de.ibm.com> */ -#define KMSG_COMPONENT "dasd-eckd" - #include <linux/list.h> #include <linux/slab.h> #include <asm/ebcdic.h> #include "dasd_int.h" #include "dasd_eckd.h" -#ifdef PRINTK_HEADER -#undef PRINTK_HEADER -#endif /* PRINTK_HEADER */ -#define PRINTK_HEADER "dasd(eckd):" - - /* * General concept of alias management: * - PAV and DASD alias management is specific to the eckd discipline. @@ -443,7 +435,7 @@ static int read_unit_address_configuration(struct dasd_device *device, ccw->cmd_code = DASD_ECKD_CCW_PSF; ccw->count = sizeof(struct dasd_psf_prssd_data); ccw->flags |= CCW_FLAG_CC; - ccw->cda = (__u32)(addr_t) prssdp; + ccw->cda = virt_to_dma32(prssdp); /* Read Subsystem Data - feature codes */ memset(lcu->uac, 0, sizeof(*(lcu->uac))); @@ -451,7 +443,7 @@ static int read_unit_address_configuration(struct dasd_device *device, ccw++; ccw->cmd_code = DASD_ECKD_CCW_RSSD; ccw->count = sizeof(*(lcu->uac)); - ccw->cda = (__u32)(addr_t) lcu->uac; + ccw->cda = virt_to_dma32(lcu->uac); cqr->buildclk = get_tod_clock(); cqr->status = DASD_CQR_FILLED; @@ -675,12 +667,12 @@ int dasd_alias_remove_device(struct dasd_device *device) struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *base_device) { struct dasd_eckd_private *alias_priv, *private = base_device->private; - struct alias_pav_group *group = private->pavgroup; struct alias_lcu *lcu = private->lcu; struct dasd_device *alias_device; + struct alias_pav_group *group; unsigned long flags; - if (!group || !lcu) + if (!lcu) return NULL; if (lcu->pav == NO_PAV || lcu->flags & (NEED_UAC_UPDATE | UPDATE_PENDING)) @@ -697,6 +689,11 @@ struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *base_device) } spin_lock_irqsave(&lcu->lock, flags); + group = private->pavgroup; + if (!group) { + spin_unlock_irqrestore(&lcu->lock, flags); + return NULL; + } alias_device = group->next; if (!alias_device) { if (list_empty(&group->aliaslist)) { @@ -742,7 +739,7 @@ static int reset_summary_unit_check(struct alias_lcu *lcu, ccw->cmd_code = DASD_ECKD_CCW_RSCK; ccw->flags = CCW_FLAG_SLI; ccw->count = 16; - ccw->cda = (__u32)(addr_t) cqr->data; + ccw->cda = virt_to_dma32(cqr->data); ((char *)cqr->data)[0] = reason; clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); |