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scsi: core: Improve type safety of scsi_rescan_device()

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Most callers of scsi_rescan_device() have the scsi_device pointer readily
available. Pass a struct scsi_device pointer to scsi_rescan_device()
instead of a struct device pointer. This change prevents that a pointer to
another struct device would be passed accidentally to scsi_rescan_device().

Remove the scsi_rescan_device() declaration from the scsi_priv.h header
file since it duplicates the declaration in <scsi/scsi_host.h>.

Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230822153043.4046244-1-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2023-08-22 08:30:41 -07:00 committed by Martin K. Petersen
parent e1a87e29fb
commit 79519528a1
11 changed files with 12 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/ata/libata-scsi.c
View File

@ -4884,7 +4884,7 @@ void ata_scsi_dev_rescan(struct work_struct *work)
}
spin_unlock_irqrestore(ap->lock, flags);
scsi_rescan_device(&(sdev->sdev_gendev));
scsi_rescan_device(sdev);
scsi_device_put(sdev);
spin_lock_irqsave(ap->lock, flags);
}

2
drivers/scsi/aacraid/commsup.c
View File

@ -1451,7 +1451,7 @@ retry_next:
#endif
break;
}
scsi_rescan_device(&device->sdev_gendev);
scsi_rescan_device(device);
break;
default:

2
drivers/scsi/mvumi.c
View File

@ -1500,7 +1500,7 @@ static void mvumi_rescan_devices(struct mvumi_hba *mhba, int id)
sdev = scsi_device_lookup(mhba->shost, 0, id, 0);
if (sdev) {
scsi_rescan_device(&sdev->sdev_gendev);
scsi_rescan_device(sdev);
scsi_device_put(sdev);
}
}

2
drivers/scsi/scsi_lib.c
View File

@ -2458,7 +2458,7 @@ static void scsi_evt_emit(struct scsi_device *sdev, struct scsi_event *evt)
envp[idx++] = "SDEV_MEDIA_CHANGE=1";
break;
case SDEV_EVT_INQUIRY_CHANGE_REPORTED:
scsi_rescan_device(&sdev->sdev_gendev);
scsi_rescan_device(sdev);
envp[idx++] = "SDEV_UA=INQUIRY_DATA_HAS_CHANGED";
break;
case SDEV_EVT_CAPACITY_CHANGE_REPORTED:

1
drivers/scsi/scsi_priv.h
View File

@ -137,7 +137,6 @@ extern int scsi_complete_async_scans(void);
extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
unsigned int, u64, enum scsi_scan_mode);
extern void scsi_forget_host(struct Scsi_Host *);
extern void scsi_rescan_device(struct device *);
/* scsi_sysctl.c */
#ifdef CONFIG_SYSCTL

4
drivers/scsi/scsi_scan.c
View File

@ -1619,9 +1619,9 @@ int scsi_add_device(struct Scsi_Host *host, uint channel,
}
EXPORT_SYMBOL(scsi_add_device);
void scsi_rescan_device(struct device *dev)
void scsi_rescan_device(struct scsi_device *sdev)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct device *dev = &sdev->sdev_gendev;
device_lock(dev);

4
drivers/scsi/scsi_sysfs.c
View File

@ -747,7 +747,7 @@ static ssize_t
store_rescan_field (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
scsi_rescan_device(dev);
scsi_rescan_device(to_scsi_device(dev));
return count;
}
static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field);
@ -840,7 +840,7 @@ store_state_field(struct device *dev, struct device_attribute *attr,
* waiting for pending I/O to finish.
*/
blk_mq_run_hw_queues(sdev->request_queue, true);
scsi_rescan_device(dev);
scsi_rescan_device(sdev);
}
return ret == 0 ? count : -EINVAL;

2
drivers/scsi/smartpqi/smartpqi_init.c
View File

@ -2257,7 +2257,7 @@ static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
device->advertised_queue_depth = device->queue_depth;
scsi_change_queue_depth(device->sdev, device->advertised_queue_depth);
if (device->rescan) {
scsi_rescan_device(&device->sdev->sdev_gendev);
scsi_rescan_device(device->sdev);
device->rescan = false;
}
}

2
drivers/scsi/storvsc_drv.c
View File

@ -470,7 +470,7 @@ static void storvsc_device_scan(struct work_struct *work)
sdev = scsi_device_lookup(wrk->host, 0, wrk->tgt_id, wrk->lun);
if (!sdev)
goto done;
scsi_rescan_device(&sdev->sdev_gendev);
scsi_rescan_device(sdev);
scsi_device_put(sdev);
done:

2
drivers/scsi/virtio_scsi.c
View File

@ -325,7 +325,7 @@ static void virtscsi_handle_param_change(struct virtio_scsi *vscsi,
/* Handle "Parameters changed", "Mode parameters changed", and
"Capacity data has changed". */
if (asc == 0x2a && (ascq == 0x00 || ascq == 0x01 || ascq == 0x09))
scsi_rescan_device(&sdev->sdev_gendev);
scsi_rescan_device(sdev);
scsi_device_put(sdev);
}

2
include/scsi/scsi_host.h
View File

@ -764,7 +764,7 @@ scsi_template_proc_dir(const struct scsi_host_template *sht);
#define scsi_template_proc_dir(sht) NULL
#endif
extern void scsi_scan_host(struct Scsi_Host *);
extern void scsi_rescan_device(struct device *);
extern void scsi_rescan_device(struct scsi_device *);
extern void scsi_remove_host(struct Scsi_Host *);
extern struct Scsi_Host *scsi_host_get(struct Scsi_Host *);
extern int scsi_host_busy(struct Scsi_Host *shost);