diff options
Diffstat (limited to 'drivers/scsi/mpi3mr/mpi3mr_app.c')
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_app.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c index 9baac224b213..72054e3a26cb 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_app.c +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -312,7 +312,7 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, num_devices++; spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); - if ((job->request_payload.payload_len == sizeof(u32)) || + if ((job->request_payload.payload_len <= sizeof(u64)) || list_empty(&mrioc->tgtdev_list)) { sg_copy_from_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, @@ -320,14 +320,14 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, return 0; } - kern_entrylen = (num_devices - 1) * sizeof(*devmap_info); - size = sizeof(*alltgt_info) + kern_entrylen; + kern_entrylen = num_devices * sizeof(*devmap_info); + size = sizeof(u64) + kern_entrylen; alltgt_info = kzalloc(size, GFP_KERNEL); if (!alltgt_info) return -ENOMEM; devmap_info = alltgt_info->dmi; - memset((u8 *)devmap_info, 0xFF, (kern_entrylen + sizeof(*devmap_info))); + memset((u8 *)devmap_info, 0xFF, kern_entrylen); spin_lock_irqsave(&mrioc->tgtdev_lock, flags); list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) { if (i < num_devices) { @@ -344,9 +344,10 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, num_devices = i; spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); - memcpy(&alltgt_info->num_devices, &num_devices, sizeof(num_devices)); + alltgt_info->num_devices = num_devices; - usr_entrylen = (job->request_payload.payload_len - sizeof(u32)) / sizeof(*devmap_info); + usr_entrylen = (job->request_payload.payload_len - sizeof(u64)) / + sizeof(*devmap_info); usr_entrylen *= sizeof(*devmap_info); min_entrylen = min(usr_entrylen, kern_entrylen); if (min_entrylen && (!memcpy(&alltgt_info->dmi, devmap_info, min_entrylen))) { @@ -358,7 +359,7 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, sg_copy_from_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, - alltgt_info, job->request_payload.payload_len); + alltgt_info, (min_entrylen + sizeof(u64))); rval = 0; out: kfree(alltgt_info); |