diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2007-03-03 03:55:54 +0300 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-03-11 19:39:27 +0300 |
| commit | bc7e380a6a4c94f79a49c36bdb28062a750b3c2b (patch) | |
| tree | c5ae13015fd0f7f15e9dbf16f865a11d0c495f3b /drivers/scsi/ibmvscsi | |
| parent | 181011e04a2a32f8d5df212254239ac9a3c8ab5e (diff) | |
| download | linux-bc7e380a6a4c94f79a49c36bdb28062a750b3c2b.tar.xz | |
[SCSI] tgt: fix sesnse buffer problems
This patch simplify the way to notify LLDs of the command completion
and addresses the following sense buffer problems:
- can't handle both data and sense.
- forces user-space to use aligned sense buffer
tgt copies sense_data from userspace to cmnd->sense_buffer (if
necessary), maps user-space pages (if necessary) and then calls
host->transfer_response (host->transfer_data is removed).
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/ibmvscsi')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvstgt.c | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvstgt.c b/drivers/scsi/ibmvscsi/ibmvstgt.c index 4368ca0e8270..a7fbd10817a0 100644 --- a/drivers/scsi/ibmvscsi/ibmvstgt.c +++ b/drivers/scsi/ibmvscsi/ibmvstgt.c @@ -273,23 +273,9 @@ static int ibmvstgt_rdma(struct scsi_cmnd *sc, struct scatterlist *sg, int nsg, rest -= mlen; } out: - return 0; } -static int ibmvstgt_transfer_data(struct scsi_cmnd *sc, - void (*done)(struct scsi_cmnd *)) -{ - struct iu_entry *iue = (struct iu_entry *) sc->SCp.ptr; - int err; - - err = srp_transfer_data(sc, &vio_iu(iue)->srp.cmd, ibmvstgt_rdma, 1, 1); - - done(sc); - - return err; -} - static int ibmvstgt_cmd_done(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) { @@ -297,7 +283,11 @@ static int ibmvstgt_cmd_done(struct scsi_cmnd *sc, struct iu_entry *iue = (struct iu_entry *) sc->SCp.ptr; struct srp_target *target = iue->target; - dprintk("%p %p %x\n", iue, target, vio_iu(iue)->srp.cmd.cdb[0]); + dprintk("%p %p %x %u\n", iue, target, vio_iu(iue)->srp.cmd.cdb[0], + cmd->usg_sg); + + if (sc->use_sg) + srp_transfer_data(sc, &vio_iu(iue)->srp.cmd, ibmvstgt_rdma, 1, 1); spin_lock_irqsave(&target->lock, flags); list_del(&iue->ilist); @@ -794,7 +784,6 @@ static struct scsi_host_template ibmvstgt_sht = { .use_clustering = DISABLE_CLUSTERING, .max_sectors = DEFAULT_MAX_SECTORS, .transfer_response = ibmvstgt_cmd_done, - .transfer_data = ibmvstgt_transfer_data, .eh_abort_handler = ibmvstgt_eh_abort_handler, .tsk_mgmt_response = ibmvstgt_tsk_mgmt_response, .shost_attrs = ibmvstgt_attrs, |