diff options
Diffstat (limited to 'drivers/firewire/sbp2.c')
| -rw-r--r-- | drivers/firewire/sbp2.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/firewire/sbp2.c b/drivers/firewire/sbp2.c index 24c45635376..e5df822a813 100644 --- a/drivers/firewire/sbp2.c +++ b/drivers/firewire/sbp2.c @@ -201,6 +201,12 @@ static struct fw_device *target_device(struct sbp2_target *tgt) #define SBP2_CYCLE_LIMIT (0xc8 << 12) /* 200 125us cycles */ /* + * There is no transport protocol limit to the CDB length, but we implement + * a fixed length only. 16 bytes is enough for disks larger than 2 TB. + */ +#define SBP2_MAX_CDB_SIZE 16 + +/* * The default maximum s/g segment size of a FireWire controller is * usually 0x10000, but SBP-2 only allows 0xffff. Since buffers have to * be quadlet-aligned, we set the length limit to 0xffff & ~3. @@ -312,7 +318,7 @@ struct sbp2_command_orb { struct sbp2_pointer next; struct sbp2_pointer data_descriptor; __be32 misc; - u8 command_block[12]; + u8 command_block[SBP2_MAX_CDB_SIZE]; } request; struct scsi_cmnd *cmd; scsi_done_fn_t done; @@ -450,12 +456,12 @@ static void sbp2_status_write(struct fw_card *card, struct fw_request *request, } spin_unlock_irqrestore(&card->lock, flags); - if (&orb->link != &lu->orb_list) + if (&orb->link != &lu->orb_list) { orb->callback(orb, &status); - else + kref_put(&orb->kref, free_orb); + } else { fw_error("status write for unknown orb\n"); - - kref_put(&orb->kref, free_orb); + } fw_send_response(card, request, RCODE_COMPLETE); } @@ -1146,6 +1152,8 @@ static int sbp2_probe(struct device *dev) if (fw_device_enable_phys_dma(device) < 0) goto fail_shost_put; + shost->max_cmd_len = SBP2_MAX_CDB_SIZE; + if (scsi_add_host(shost, &unit->device) < 0) goto fail_shost_put; |