diff options
| author | Mike Anderson <andmike@us.ibm.com> | 2005-06-16 20:14:33 +0200 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2005-07-30 18:13:01 +0200 |
| commit | 82f29467a025f6a2192d281e97fca0be46e905cc (patch) | |
| tree | 5cf356ece53caf2936ca85803676b326094f7c38 /drivers/scsi/scsi_scan.c | |
| parent | [SCSI] host state model update: reimplement scsi_host_cancel (diff) | |
| download | linux-82f29467a025f6a2192d281e97fca0be46e905cc.tar.xz linux-82f29467a025f6a2192d281e97fca0be46e905cc.zip | |
[SCSI] host state model update: mediate host add/remove race
Add support to not allow additions to a host when it is being removed.
Signed-off-by: Mike Anderson <andmike@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 2d3c4ac475f2..076cbe3b5a05 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -1251,9 +1251,12 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel, get_device(&starget->dev); down(&shost->scan_mutex); - res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata); - if (res != SCSI_SCAN_LUN_PRESENT) - sdev = ERR_PTR(-ENODEV); + if (scsi_host_scan_allowed(shost)) { + res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, + hostdata); + if (res != SCSI_SCAN_LUN_PRESENT) + sdev = ERR_PTR(-ENODEV); + } up(&shost->scan_mutex); scsi_target_reap(starget); put_device(&starget->dev); @@ -1403,11 +1406,15 @@ int scsi_scan_host_selected(struct Scsi_Host *shost, unsigned int channel, return -EINVAL; down(&shost->scan_mutex); - if (channel == SCAN_WILD_CARD) - for (channel = 0; channel <= shost->max_channel; channel++) + if (scsi_host_scan_allowed(shost)) { + if (channel == SCAN_WILD_CARD) + for (channel = 0; channel <= shost->max_channel; + channel++) + scsi_scan_channel(shost, channel, id, lun, + rescan); + else scsi_scan_channel(shost, channel, id, lun, rescan); - else - scsi_scan_channel(shost, channel, id, lun, rescan); + } up(&shost->scan_mutex); return 0; |