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authorChristoph Hellwig <hch@lst.de>2006-01-13 19:04:00 +0100
committerJames Bottomley <jejb@mulgrave.(none)>2006-01-14 10:55:05 -0600
commite02f3f59225d8c3b2a0ad0dc941a09865e27da61 (patch)
tree37d2931f5d24dc063d9606ec6b5e8db359b439c7 /drivers/scsi/scsi_sysfs.c
parent6d5b0c315e0c14f8a0fe274eda7676d62cbd8584 (diff)
[SCSI] remove target parent limitiation
When James Smart fixed the issue of the userspace scan atributes crashing the system with the FC transport class he added a patch to let the transport class check if the parent is valid for a given transport class. When adding support for the integrated raid of fusion sas devices we ran into a problem with that, as it didn't allow adding virtual raid volumes without the transport class knowing about it. So this patch adds a user_scan attribute instead, that takes over from scsi_scan_host_selected if the transport class sets it and thus lets the transport class control the user-initiated scanning. As this plugs the hole about user-initiated scanning the target_parent hook goes away and we rely on callers of the scanning routines to do something sensible. For SAS this meant I had to switch from a spinlock to a mutex to synchronize the topology linked lists, in FC they were completely unsynchronized which seems wrong. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
-rw-r--r--drivers/scsi/scsi_sysfs.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 2cb962751a7e..a77b32deaf8f 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -106,7 +106,10 @@ static int scsi_scan(struct Scsi_Host *shost, const char *str)
return -EINVAL;
if (check_set(&lun, s3))
return -EINVAL;
- res = scsi_scan_host_selected(shost, channel, id, lun, 1);
+ if (shost->transportt->user_scan)
+ res = shost->transportt->user_scan(shost, channel, id, lun);
+ else
+ res = scsi_scan_host_selected(shost, channel, id, lun, 1);
return res;
}