leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[SCSI] move the mid-layer printk's over to shost/starget/sdev_printk

Browse Source 
This should eliminate (at least in the mid layer) to make numeric
assumptions about any of the enumeration variables.  As a side effect,
it will also make all the messages consistent and line us up nicely for
the error logging strategy (if it ever shows itself again).

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley 2005-10-02 11:45:08 -05:00 committed by James Bottomley
parent 9a41a62b74
commit 9ccfc756a7
16 changed files with 96 additions and 119 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/scsi/constants.c
View File

@ -1389,10 +1389,7 @@ EXPORT_SYMBOL(scsi_print_msg);
void scsi_print_command(struct scsi_cmnd *cmd)
{
/* Assume appended output (i.e. not at start of line) */
printk("scsi%d : destination target %d, lun %d\n",
cmd->device->host->host_no,
cmd->device->id,
cmd->device->lun);
sdev_printk("", cmd->device, "\n");
printk(KERN_INFO " command: ");
scsi_print_cdb(cmd->cmnd, cmd->cmd_len, 0);
}

10
drivers/scsi/hosts.c
View File

@ -139,11 +139,11 @@ int scsi_host_set_state(struct Scsi_Host *shost, enum scsi_host_state state)
illegal:
SCSI_LOG_ERROR_RECOVERY(1,
dev_printk(KERN_ERR, &shost->shost_gendev,
"Illegal host state transition"
"%s->%s\n",
scsi_host_state_name(oldstate),
scsi_host_state_name(state)));
shost_printk(KERN_ERR, shost,
"Illegal host state transition"
"%s->%s\n",
scsi_host_state_name(oldstate),
scsi_host_state_name(state)));
return -EINVAL;
}
EXPORT_SYMBOL(scsi_host_set_state);

6
drivers/scsi/osst.c
View File

@ -5819,9 +5819,9 @@ static int osst_probe(struct device *dev)
}
drive->number = devfs_register_tape(SDp->devfs_name);
printk(KERN_INFO
"osst :I: Attached OnStream %.5s tape at scsi%d, channel %d, id %d, lun %d as %s\n",
SDp->model, SDp->host->host_no, SDp->channel, SDp->id, SDp->lun, tape_name(tpnt));
dev_printk(KERN_INFO, &SDp->sdev_gendev,
"osst :I: Attached OnStream %.5s tape as %s\n",
SDp->model, tape_name(tpnt));
return 0;

21
drivers/scsi/scsi.c
View File

@ -410,9 +410,7 @@ void scsi_log_send(struct scsi_cmnd *cmd)
SCSI_LOG_MLQUEUE_BITS);
if (level > 1) {
sdev = cmd->device;
printk(KERN_INFO "scsi <%d:%d:%d:%d> send ",
sdev->host->host_no, sdev->channel, sdev->id,
sdev->lun);
sdev_printk(KERN_INFO, sdev, "send ");
if (level > 2)
printk("0x%p ", cmd);
/*
@ -456,9 +454,7 @@ void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
if (((level > 0) && (cmd->result || disposition != SUCCESS)) ||
(level > 1)) {
sdev = cmd->device;
printk(KERN_INFO "scsi <%d:%d:%d:%d> done ",
sdev->host->host_no, sdev->channel, sdev->id,
sdev->lun);
sdev_printk(KERN_INFO, sdev, "done ");
if (level > 2)
printk("0x%p ", cmd);
/*
@ -810,9 +806,9 @@ static void scsi_softirq(struct softirq_action *h)
disposition = scsi_decide_disposition(cmd);
if (disposition != SUCCESS &&
time_before(cmd->jiffies_at_alloc + wait_for, jiffies)) {
dev_printk(KERN_ERR, &cmd->device->sdev_gendev,
"timing out command, waited %lus\n",
wait_for/HZ);
sdev_printk(KERN_ERR, cmd->device,
"timing out command, waited %lus\n",
wait_for/HZ);
disposition = SUCCESS;
}
@ -970,10 +966,9 @@ void scsi_adjust_queue_depth(struct scsi_device *sdev, int tagged, int tags)
sdev->simple_tags = 1;
break;
default:
printk(KERN_WARNING "(scsi%d:%d:%d:%d) "
"scsi_adjust_queue_depth, bad queue type, "
"disabled\n", sdev->host->host_no,
sdev->channel, sdev->id, sdev->lun);
sdev_printk(KERN_WARNING, sdev,
"scsi_adjust_queue_depth, bad queue type, "
"disabled\n");
case 0:
sdev->ordered_tags = sdev->simple_tags = 0;
sdev->queue_depth = tags;

25
drivers/scsi/scsi_error.c
View File

@ -241,11 +241,10 @@ static inline void scsi_eh_prt_fail_stats(struct Scsi_Host *shost,
if (cmd_cancel || cmd_failed) {
SCSI_LOG_ERROR_RECOVERY(3,
printk("%s: %d:%d:%d:%d cmds failed: %d,"
" cancel: %d\n",
__FUNCTION__, shost->host_no,
sdev->channel, sdev->id, sdev->lun,
cmd_failed, cmd_cancel));
sdev_printk(KERN_INFO, sdev,
"%s: cmds failed: %d, cancel: %d\n",
__FUNCTION__, cmd_failed,
cmd_cancel));
cmd_cancel = 0;
cmd_failed = 0;
++devices_failed;
@ -1174,13 +1173,9 @@ static void scsi_eh_offline_sdevs(struct list_head *work_q,
struct scsi_cmnd *scmd, *next;
list_for_each_entry_safe(scmd, next, work_q, eh_entry) {
printk(KERN_INFO "scsi: Device offlined - not"
" ready after error recovery: host"
" %d channel %d id %d lun %d\n",
scmd->device->host->host_no,
scmd->device->channel,
scmd->device->id,
scmd->device->lun);
sdev_printk(KERN_INFO, scmd->device,
"scsi: Device offlined - not"
" ready after error recovery\n");
scsi_device_set_state(scmd->device, SDEV_OFFLINE);
if (scmd->eh_eflags & SCSI_EH_CANCEL_CMD) {
/*
@ -1342,10 +1337,8 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd)
return SUCCESS;
case RESERVATION_CONFLICT:
printk(KERN_INFO "scsi: reservation conflict: host"
" %d channel %d id %d lun %d\n",
scmd->device->host->host_no, scmd->device->channel,
scmd->device->id, scmd->device->lun);
sdev_printk(KERN_INFO, scmd->device,
"reservation conflict\n");
return SUCCESS; /* causes immediate i/o error */
default:
return FAILED;

10
drivers/scsi/scsi_ioctl.c
View File

@ -122,13 +122,9 @@ static int ioctl_internal_command(struct scsi_device *sdev, char *cmd,
break;
}
default: /* Fall through for non-removable media */
printk(KERN_INFO "ioctl_internal_command: <%d %d %d "
"%d> return code = %x\n",
sdev->host->host_no,
sdev->channel,
sdev->id,
sdev->lun,
result);
sdev_printk(KERN_INFO, sdev,
"ioctl_internal_command return code = %x\n",
result);
scsi_print_sense_hdr(" ", &sshdr);
break;
}

46
drivers/scsi/scsi_lib.c
View File

@ -951,16 +951,16 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes,
return;
}
if (!(req->flags & REQ_QUIET))
dev_printk(KERN_INFO,
&cmd->device->sdev_gendev,
"Device not ready.\n");
sdev_printk(KERN_INFO,
cmd->device,
"Device not ready.\n");
scsi_end_request(cmd, 0, this_count, 1);
return;
case VOLUME_OVERFLOW:
if (!(req->flags & REQ_QUIET)) {
dev_printk(KERN_INFO,
&cmd->device->sdev_gendev,
"Volume overflow, CDB: ");
sdev_printk(KERN_INFO,
cmd->device,
"Volume overflow, CDB: ");
__scsi_print_command(cmd->data_cmnd);
scsi_print_sense("", cmd);
}
@ -981,8 +981,9 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes,
}
if (result) {
if (!(req->flags & REQ_QUIET)) {
dev_printk(KERN_INFO, &cmd->device->sdev_gendev,
"SCSI error: return code = 0x%x\n", result);
sdev_printk(KERN_INFO, cmd->device,
"SCSI error: return code = 0x%x\n",
result);
if (driver_byte(result) & DRIVER_SENSE)
scsi_print_sense("", cmd);
@ -1141,8 +1142,8 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
* online before trying any recovery commands
*/
if (unlikely(!scsi_device_online(sdev))) {
printk(KERN_ERR "scsi%d (%d:%d): rejecting I/O to offline device\n",
sdev->host->host_no, sdev->id, sdev->lun);
sdev_printk(KERN_ERR, sdev,
"rejecting I/O to offline device\n");
goto kill;
}
if (unlikely(sdev->sdev_state != SDEV_RUNNING)) {
@ -1151,8 +1152,8 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
if (sdev->sdev_state == SDEV_DEL) {
/* Device is fully deleted, no commands
* at all allowed down */
printk(KERN_ERR "scsi%d (%d:%d): rejecting I/O to dead device\n",
sdev->host->host_no, sdev->id, sdev->lun);
sdev_printk(KERN_ERR, sdev,
"rejecting I/O to dead device\n");
goto kill;
}
/* OK, we only allow special commands (i.e. not
@ -1187,8 +1188,8 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
specials_only == SDEV_BLOCK)
goto defer;
printk(KERN_ERR "scsi%d (%d:%d): rejecting I/O to device being removed\n",
sdev->host->host_no, sdev->id, sdev->lun);
sdev_printk(KERN_ERR, sdev,
"rejecting I/O to device being removed\n");
goto kill;
}
@ -1315,9 +1316,8 @@ static inline int scsi_dev_queue_ready(struct request_queue *q,
*/
if (--sdev->device_blocked == 0) {
SCSI_LOG_MLQUEUE(3,
printk("scsi%d (%d:%d) unblocking device at"
" zero depth\n", sdev->host->host_no,
sdev->id, sdev->lun));
sdev_printk(KERN_INFO, sdev,
"unblocking device at zero depth\n"));
} else {
blk_plug_device(q);
return 0;
@ -1436,8 +1436,8 @@ static void scsi_request_fn(struct request_queue *q)
break;
if (unlikely(!scsi_device_online(sdev))) {
printk(KERN_ERR "scsi%d (%d:%d): rejecting I/O to offline device\n",
sdev->host->host_no, sdev->id, sdev->lun);
sdev_printk(KERN_ERR, sdev,
"rejecting I/O to offline device\n");
scsi_kill_request(req, q);
continue;
}
@ -1893,10 +1893,10 @@ scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
illegal:
SCSI_LOG_ERROR_RECOVERY(1,
dev_printk(KERN_ERR, &sdev->sdev_gendev,
"Illegal state transition %s->%s\n",
scsi_device_state_name(oldstate),
scsi_device_state_name(state))
sdev_printk(KERN_ERR, sdev,
"Illegal state transition %s->%s\n",
scsi_device_state_name(oldstate),
scsi_device_state_name(state))
);
return -EINVAL;
}

7
drivers/scsi/scsi_scan.c
View File

@ -462,10 +462,9 @@ static int scsi_probe_lun(struct scsi_device *sdev, char *inq_result,
pass = 1;
next_pass:
SCSI_LOG_SCAN_BUS(3, printk(KERN_INFO "scsi scan: INQUIRY pass %d "
"to host %d channel %d id %d lun %d, length %d\n",
pass, sdev->host->host_no, sdev->channel,
sdev->id, sdev->lun, try_inquiry_len));
SCSI_LOG_SCAN_BUS(3, sdev_printk(KERN_INFO, sdev,
"scsi scan: INQUIRY pass %d length %d\n",
pass, try_inquiry_len));
/* Each pass gets up to three chances to ignore Unit Attention */
for (count = 0; count < 3; ++count) {

2
drivers/scsi/scsi_transport_fc.c
View File

@ -32,8 +32,6 @@
#include <scsi/scsi_transport_fc.h>
#include "scsi_priv.h"
#define FC_PRINTK(x, l, f, a...) printk(l "scsi(%d:%d:%d:%d): " f, (x)->host->host_no, (x)->channel, (x)->id, (x)->lun , ##a)
/*
* Redefine so that we can have same named attributes in the
* sdev/starget/host objects.

24
drivers/scsi/scsi_transport_spi.c
View File

@ -33,8 +33,6 @@
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>
#define SPI_PRINTK(x, l, f, a...) dev_printk(l, &(x)->dev, f , ##a)
#define SPI_NUM_ATTRS 14 /* increase this if you add attributes */
#define SPI_OTHER_ATTRS 1 /* Increase this if you add "always
* on" attributes */
@ -618,7 +616,7 @@ spi_dv_device_echo_buffer(struct scsi_device *sdev, u8 *buffer,
return SPI_COMPARE_SKIP_TEST;
SPI_PRINTK(sdev->sdev_target, KERN_ERR, "Write Buffer failure %x\n", result);
sdev_printk(KERN_ERR, sdev, "Write Buffer failure %x\n", result);
return SPI_COMPARE_FAILURE;
}
@ -702,10 +700,10 @@ spi_dv_retrain(struct scsi_device *sdev, u8 *buffer, u8 *ptr,
* IU, then QAS (if we can control them), then finally
* fall down the periods */
if (i->f->set_iu && spi_iu(starget)) {
SPI_PRINTK(starget, KERN_ERR, "Domain Validation Disabing Information Units\n");
starget_printk(KERN_ERR, starget, "Domain Validation Disabing Information Units\n");
DV_SET(iu, 0);
} else if (i->f->set_qas && spi_qas(starget)) {
SPI_PRINTK(starget, KERN_ERR, "Domain Validation Disabing Quick Arbitration and Selection\n");
starget_printk(KERN_ERR, starget, "Domain Validation Disabing Quick Arbitration and Selection\n");
DV_SET(qas, 0);
} else {
newperiod = spi_period(starget);
@ -717,11 +715,11 @@ spi_dv_retrain(struct scsi_device *sdev, u8 *buffer, u8 *ptr,
if (unlikely(period > 0xff || period == prevperiod)) {
/* Total failure; set to async and return */
SPI_PRINTK(starget, KERN_ERR, "Domain Validation Failure, dropping back to Asynchronous\n");
starget_printk(KERN_ERR, starget, "Domain Validation Failure, dropping back to Asynchronous\n");
DV_SET(offset, 0);
return SPI_COMPARE_FAILURE;
}
SPI_PRINTK(starget, KERN_ERR, "Domain Validation detected failure, dropping back\n");
starget_printk(KERN_ERR, starget, "Domain Validation detected failure, dropping back\n");
DV_SET(period, period);
prevperiod = period;
}
@ -788,7 +786,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
if (spi_dv_device_compare_inquiry(sdev, buffer, buffer, DV_LOOPS)
!= SPI_COMPARE_SUCCESS) {
SPI_PRINTK(starget, KERN_ERR, "Domain Validation Initial Inquiry Failed\n");
starget_printk(KERN_ERR, starget, "Domain Validation Initial Inquiry Failed\n");
/* FIXME: should probably offline the device here? */
return;
}
@ -802,7 +800,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
buffer + len,
DV_LOOPS)
!= SPI_COMPARE_SUCCESS) {
SPI_PRINTK(starget, KERN_ERR, "Wide Transfers Fail\n");
starget_printk(KERN_ERR, starget, "Wide Transfers Fail\n");
i->f->set_width(starget, 0);
}
}
@ -844,14 +842,14 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
}
if (len == 0) {
SPI_PRINTK(starget, KERN_INFO, "Domain Validation skipping write tests\n");
starget_printk(KERN_INFO, starget, "Domain Validation skipping write tests\n");
spi_dv_retrain(sdev, buffer, buffer + len,
spi_dv_device_compare_inquiry);
return;
}
if (len > SPI_MAX_ECHO_BUFFER_SIZE) {
SPI_PRINTK(starget, KERN_WARNING, "Echo buffer size %d is too big, trimming to %d\n", len, SPI_MAX_ECHO_BUFFER_SIZE);
starget_printk(KERN_WARNING, starget, "Echo buffer size %d is too big, trimming to %d\n", len, SPI_MAX_ECHO_BUFFER_SIZE);
len = SPI_MAX_ECHO_BUFFER_SIZE;
}
@ -902,11 +900,11 @@ spi_dv_device(struct scsi_device *sdev)
spi_dv_pending(starget) = 1;
down(&spi_dv_sem(starget));
SPI_PRINTK(starget, KERN_INFO, "Beginning Domain Validation\n");
starget_printk(KERN_INFO, starget, "Beginning Domain Validation\n");
spi_dv_device_internal(sdev, buffer);
SPI_PRINTK(starget, KERN_INFO, "Ending Domain Validation\n");
starget_printk(KERN_INFO, starget, "Ending Domain Validation\n");
up(&spi_dv_sem(starget));
spi_dv_pending(starget) = 0;

10
drivers/scsi/sd.c
View File

@ -1534,8 +1534,8 @@ static int sd_probe(struct device *dev)
if (sdp->type != TYPE_DISK && sdp->type != TYPE_MOD && sdp->type != TYPE_RBC)
goto out;
SCSI_LOG_HLQUEUE(3, printk("sd_attach: scsi device: <%d,%d,%d,%d>\n",
sdp->host->host_no, sdp->channel, sdp->id, sdp->lun));
SCSI_LOG_HLQUEUE(3, sdev_printk(KERN_INFO, sdp,
"sd_attach\n"));
error = -ENOMEM;
sdkp = kmalloc(sizeof(*sdkp), GFP_KERNEL);
@ -1607,10 +1607,8 @@ static int sd_probe(struct device *dev)
dev_set_drvdata(dev, sdkp);
add_disk(gd);
printk(KERN_NOTICE "Attached scsi %sdisk %s at scsi%d, channel %d, "
"id %d, lun %d\n", sdp->removable ? "removable " : "",
gd->disk_name, sdp->host->host_no, sdp->channel,
sdp->id, sdp->lun);
sdev_printk(KERN_NOTICE, sdp, "Attached scsi %sdisk %s\n",
sdp->removable ? "removable " : "", gd->disk_name);
return 0;

14
drivers/scsi/sg.c
View File

@ -1497,10 +1497,9 @@ static int sg_alloc(struct gendisk *disk, struct scsi_device *scsidp)
overflow:
write_unlock_irqrestore(&sg_dev_arr_lock, iflags);
printk(KERN_WARNING
"Unable to attach sg device <%d, %d, %d, %d> type=%d, minor "
"number exceeds %d\n", scsidp->host->host_no, scsidp->channel,
scsidp->id, scsidp->lun, scsidp->type, SG_MAX_DEVS - 1);
sdev_printk(KERN_WARNING, scsidp,
"Unable to attach sg device type=%d, minor "
"number exceeds %d\n", scsidp->type, SG_MAX_DEVS - 1);
error = -ENODEV;
goto out;
}
@ -1566,11 +1565,8 @@ sg_add(struct class_device *cl_dev)
} else
printk(KERN_WARNING "sg_add: sg_sys INvalid\n");
printk(KERN_NOTICE
"Attached scsi generic sg%d at scsi%d, channel"
" %d, id %d, lun %d, type %d\n", k,
scsidp->host->host_no, scsidp->channel, scsidp->id,
scsidp->lun, scsidp->type);
sdev_printk(KERN_NOTICE, scsidp,
"Attached scsi generic sg%d type %d\n", k,scsidp->type);
return 0;

15
drivers/scsi/sr.c
View File

@ -360,7 +360,7 @@ static int sr_init_command(struct scsi_cmnd * SCpnt)
}
if (s_size != 512 && s_size != 1024 && s_size != 2048) {
printk("sr: bad sector size %d\n", s_size);
sdev_printk(KERN_ERR, SCpnt->device, "bad sector size %d\n", s_size);
return 0;
}
@ -385,8 +385,9 @@ static int sr_init_command(struct scsi_cmnd * SCpnt)
size += sg[i].length;
if (size != SCpnt->request_bufflen && SCpnt->use_sg) {
printk(KERN_ERR "sr: mismatch count %d, bytes %d\n",
size, SCpnt->request_bufflen);
sdev_printk(KERN_ERR, SCpnt->device,
"mismatch count %d, bytes %d\n",
size, SCpnt->request_bufflen);
if (SCpnt->request_bufflen > size)
SCpnt->request_bufflen = SCpnt->bufflen = size;
}
@ -397,7 +398,7 @@ static int sr_init_command(struct scsi_cmnd * SCpnt)
*/
if (((unsigned int)SCpnt->request->sector % (s_size >> 9)) ||
(SCpnt->request_bufflen % s_size)) {
printk("sr: unaligned transfer\n");
sdev_printk(KERN_NOTICE, SCpnt->device, "unaligned transfer\n");
return 0;
}
@ -622,10 +623,8 @@ static int sr_probe(struct device *dev)
disk->flags |= GENHD_FL_REMOVABLE;
add_disk(disk);
printk(KERN_DEBUG
"Attached scsi CD-ROM %s at scsi%d, channel %d, id %d, lun %d\n",
cd->cdi.name, sdev->host->host_no, sdev->channel,
sdev->id, sdev->lun);
sdev_printk(KERN_DEBUG, sdev,
"Attached scsi CD-ROM %s\n", cd->cdi.name);
return 0;
fail_put:

10
drivers/scsi/st.c
View File

@ -3887,9 +3887,8 @@ static int st_probe(struct device *dev)
if (SDp->type != TYPE_TAPE)
return -ENODEV;
if ((stp = st_incompatible(SDp))) {
printk(KERN_INFO
"st: Found incompatible tape at scsi%d, channel %d, id %d, lun %d\n",
SDp->host->host_no, SDp->channel, SDp->id, SDp->lun);
sdev_printk(KERN_INFO, SDp,
"Found incompatible tape\n");
printk(KERN_INFO "st: The suggested driver is %s.\n", stp);
return -ENODEV;
}
@ -4077,9 +4076,8 @@ static int st_probe(struct device *dev)
}
disk->number = devfs_register_tape(SDp->devfs_name);
printk(KERN_WARNING
"Attached scsi tape %s at scsi%d, channel %d, id %d, lun %d\n",
tape_name(tpnt), SDp->host->host_no, SDp->channel, SDp->id, SDp->lun);
sdev_printk(KERN_WARNING, SDp,
"Attached scsi tape %s", tape_name(tpnt));
printk(KERN_WARNING "%s: try direct i/o: %s (alignment %d B), max page reachable by HBA %lu\n",
tape_name(tpnt), tpnt->try_dio ? "yes" : "no",
queue_dma_alignment(SDp->request_queue) + 1, tpnt->max_pfn);

6
include/scsi/scsi_device.h
View File

@ -148,6 +148,9 @@ struct scsi_device {
#define transport_class_to_sdev(class_dev) \
to_scsi_device(class_dev->dev)
#define sdev_printk(prefix, sdev, fmt, a...) \
dev_printk(prefix, &(sdev)->sdev_gendev, fmt, ##a)
/*
* scsi_target: representation of a scsi target, for now, this is only
* used for single_lun devices. If no one has active IO to the target,
@ -177,6 +180,9 @@ static inline struct scsi_target *scsi_target(struct scsi_device *sdev)
#define transport_class_to_starget(class_dev) \
to_scsi_target(class_dev->dev)
#define starget_printk(prefix, starget, fmt, a...) \
dev_printk(prefix, &(starget)->dev, fmt, ##a)
extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
uint, uint, uint, void *hostdata);
extern int scsi_add_device(struct Scsi_Host *host, uint channel,

4
include/scsi/scsi_host.h
View File

@ -609,6 +609,10 @@ struct Scsi_Host {
#define class_to_shost(d) \
container_of(d, struct Scsi_Host, shost_classdev)
#define shost_printk(prefix, shost, fmt, a...) \
dev_printk(prefix, &(shost)->shost_gendev, fmt, ##a)
int scsi_is_host_device(const struct device *);
static inline struct Scsi_Host *dev_to_shost(struct device *dev)