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[SCSI] st: update to use block timeout
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Since we're trying to eliminate struct scsi_device timeout, the tape
driver has to be updated to use the block queue timeout instead.  The
tape use of scsi_device timeout looks to be self consistent, so I don't
think this necessarily fixes any bug, but it has to be done to allow me
to remove the timeout parameter from struct scsi_device.

Acked-by: Kai Makisara <Kai.Makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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James Bottomley authored and James Bottomley committed Dec 29, 2008
1 parent da24465 commit a02488e
Showing 1 changed file with 28 additions and 19 deletions.
47 changes: 28 additions & 19 deletions drivers/scsi/st.c
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Original file line number Diff line number Diff line change
Expand Up @@ -613,7 +613,8 @@ static int cross_eof(struct scsi_tape * STp, int forward)
tape_name(STp), forward ? "forward" : "backward"));

SRpnt = st_do_scsi(NULL, STp, cmd, 0, DMA_NONE,
STp->device->timeout, MAX_RETRIES, 1);
STp->device->request_queue->rq_timeout,
MAX_RETRIES, 1);
if (!SRpnt)
return (STp->buffer)->syscall_result;

Expand Down Expand Up @@ -657,7 +658,8 @@ static int st_flush_write_buffer(struct scsi_tape * STp)
cmd[4] = blks;

SRpnt = st_do_scsi(NULL, STp, cmd, transfer, DMA_TO_DEVICE,
STp->device->timeout, MAX_WRITE_RETRIES, 1);
STp->device->request_queue->rq_timeout,
MAX_WRITE_RETRIES, 1);
if (!SRpnt)
return (STp->buffer)->syscall_result;

Expand Down Expand Up @@ -987,7 +989,8 @@ static int check_tape(struct scsi_tape *STp, struct file *filp)
cmd[0] = READ_BLOCK_LIMITS;

SRpnt = st_do_scsi(SRpnt, STp, cmd, 6, DMA_FROM_DEVICE,
STp->device->timeout, MAX_READY_RETRIES, 1);
STp->device->request_queue->rq_timeout,
MAX_READY_RETRIES, 1);
if (!SRpnt) {
retval = (STp->buffer)->syscall_result;
goto err_out;
Expand All @@ -1014,7 +1017,8 @@ static int check_tape(struct scsi_tape *STp, struct file *filp)
cmd[4] = 12;

SRpnt = st_do_scsi(SRpnt, STp, cmd, 12, DMA_FROM_DEVICE,
STp->device->timeout, MAX_READY_RETRIES, 1);
STp->device->request_queue->rq_timeout,
MAX_READY_RETRIES, 1);
if (!SRpnt) {
retval = (STp->buffer)->syscall_result;
goto err_out;
Expand Down Expand Up @@ -1247,7 +1251,8 @@ static int st_flush(struct file *filp, fl_owner_t id)
cmd[4] = 1 + STp->two_fm;

SRpnt = st_do_scsi(NULL, STp, cmd, 0, DMA_NONE,
STp->device->timeout, MAX_WRITE_RETRIES, 1);
STp->device->request_queue->rq_timeout,
MAX_WRITE_RETRIES, 1);
if (!SRpnt) {
result = (STp->buffer)->syscall_result;
goto out;
Expand Down Expand Up @@ -1634,7 +1639,8 @@ st_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
cmd[4] = blks;

SRpnt = st_do_scsi(SRpnt, STp, cmd, transfer, DMA_TO_DEVICE,
STp->device->timeout, MAX_WRITE_RETRIES, !async_write);
STp->device->request_queue->rq_timeout,
MAX_WRITE_RETRIES, !async_write);
if (!SRpnt) {
retval = STbp->syscall_result;
goto out;
Expand Down Expand Up @@ -1804,7 +1810,8 @@ static long read_tape(struct scsi_tape *STp, long count,

SRpnt = *aSRpnt;
SRpnt = st_do_scsi(SRpnt, STp, cmd, bytes, DMA_FROM_DEVICE,
STp->device->timeout, MAX_RETRIES, 1);
STp->device->request_queue->rq_timeout,
MAX_RETRIES, 1);
release_buffering(STp, 1);
*aSRpnt = SRpnt;
if (!SRpnt)
Expand Down Expand Up @@ -2213,7 +2220,8 @@ static int st_set_options(struct scsi_tape *STp, long options)
DEBC( printk(KERN_INFO "%s: Long timeout set to %d seconds.\n", name,
(value & ~MT_ST_SET_LONG_TIMEOUT)));
} else {
STp->device->timeout = value * HZ;
blk_queue_rq_timeout(STp->device->request_queue,
value * HZ);
DEBC( printk(KERN_INFO "%s: Normal timeout set to %d seconds.\n",
name, value) );
}
Expand Down Expand Up @@ -2321,7 +2329,7 @@ static int read_mode_page(struct scsi_tape *STp, int page, int omit_block_descs)
cmd[4] = 255;

SRpnt = st_do_scsi(SRpnt, STp, cmd, cmd[4], DMA_FROM_DEVICE,
STp->device->timeout, 0, 1);
STp->device->request_queue->rq_timeout, 0, 1);
if (SRpnt == NULL)
return (STp->buffer)->syscall_result;

Expand Down Expand Up @@ -2352,7 +2360,7 @@ static int write_mode_page(struct scsi_tape *STp, int page, int slow)
(STp->buffer)->b_data[pgo + MP_OFF_PAGE_NBR] &= MP_MSK_PAGE_NBR;

SRpnt = st_do_scsi(SRpnt, STp, cmd, cmd[4], DMA_TO_DEVICE,
(slow ? STp->long_timeout : STp->device->timeout), 0, 1);
(slow ? STp->long_timeout : STp->device->request_queue->rq_timeout), 0, 1);
if (SRpnt == NULL)
return (STp->buffer)->syscall_result;

Expand Down Expand Up @@ -2464,7 +2472,7 @@ static int do_load_unload(struct scsi_tape *STp, struct file *filp, int load_cod
}
if (STp->immediate) {
cmd[1] = 1; /* Don't wait for completion */
timeout = STp->device->timeout;
timeout = STp->device->request_queue->rq_timeout;
}
else
timeout = STp->long_timeout;
Expand Down Expand Up @@ -2638,7 +2646,7 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
cmd[2] = (arg >> 16);
cmd[3] = (arg >> 8);
cmd[4] = arg;
timeout = STp->device->timeout;
timeout = STp->device->request_queue->rq_timeout;
DEBC(
if (cmd_in == MTWEOF)
printk(ST_DEB_MSG "%s: Writing %d filemarks.\n", name,
Expand All @@ -2656,7 +2664,7 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
cmd[0] = REZERO_UNIT;
if (STp->immediate) {
cmd[1] = 1; /* Don't wait for completion */
timeout = STp->device->timeout;
timeout = STp->device->request_queue->rq_timeout;
}
DEBC(printk(ST_DEB_MSG "%s: Rewinding tape.\n", name));
fileno = blkno = at_sm = 0;
Expand All @@ -2669,7 +2677,7 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
cmd[0] = START_STOP;
if (STp->immediate) {
cmd[1] = 1; /* Don't wait for completion */
timeout = STp->device->timeout;
timeout = STp->device->request_queue->rq_timeout;
}
cmd[4] = 3;
DEBC(printk(ST_DEB_MSG "%s: Retensioning tape.\n", name));
Expand Down Expand Up @@ -2702,7 +2710,7 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
cmd[1] = (arg ? 1 : 0); /* Long erase with non-zero argument */
if (STp->immediate) {
cmd[1] |= 2; /* Don't wait for completion */
timeout = STp->device->timeout;
timeout = STp->device->request_queue->rq_timeout;
}
else
timeout = STp->long_timeout * 8;
Expand Down Expand Up @@ -2754,7 +2762,7 @@ static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned lon
(STp->buffer)->b_data[9] = (ltmp >> 16);
(STp->buffer)->b_data[10] = (ltmp >> 8);
(STp->buffer)->b_data[11] = ltmp;
timeout = STp->device->timeout;
timeout = STp->device->request_queue->rq_timeout;
DEBC(
if (cmd_in == MTSETBLK || cmd_in == SET_DENS_AND_BLK)
printk(ST_DEB_MSG
Expand Down Expand Up @@ -2944,7 +2952,8 @@ static int get_location(struct scsi_tape *STp, unsigned int *block, int *partiti
scmd[1] = 1;
}
SRpnt = st_do_scsi(NULL, STp, scmd, 20, DMA_FROM_DEVICE,
STp->device->timeout, MAX_READY_RETRIES, 1);
STp->device->request_queue->rq_timeout,
MAX_READY_RETRIES, 1);
if (!SRpnt)
return (STp->buffer)->syscall_result;

Expand Down Expand Up @@ -3045,7 +3054,7 @@ static int set_location(struct scsi_tape *STp, unsigned int block, int partition
}
if (STp->immediate) {
scmd[1] |= 1; /* Don't wait for completion */
timeout = STp->device->timeout;
timeout = STp->device->request_queue->rq_timeout;
}

SRpnt = st_do_scsi(NULL, STp, scmd, 0, DMA_NONE,
Expand Down Expand Up @@ -4029,7 +4038,7 @@ static int st_probe(struct device *dev)
tpnt->partition = 0;
tpnt->new_partition = 0;
tpnt->nbr_partitions = 0;
tpnt->device->timeout = ST_TIMEOUT;
blk_queue_rq_timeout(tpnt->device->request_queue, ST_TIMEOUT);
tpnt->long_timeout = ST_LONG_TIMEOUT;
tpnt->try_dio = try_direct_io && !SDp->host->unchecked_isa_dma;

Expand Down

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