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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2009-08-01 04:39:36 +0400
committerJames Bottomley <James.Bottomley@suse.de>2009-08-23 02:52:13 +0400
commit163f52b6cf3a639df6a72c7937e0eb88b20f1ef3 (patch)
tree68991096e7ff15e31db28fb0d7bf2e87b1bd01c2 /drivers/scsi/ses.c
parent0124ca9d8ee58b3cd028a23cef2fe225fcfee3b8 (diff)
downloadlinux-163f52b6cf3a639df6a72c7937e0eb88b20f1ef3.tar.xz
[SCSI] ses: fix hotplug with multiple devices and expanders
In a situation either with expanders or with multiple enclosure devices, hot add doesn't always work. This is because we try to find a single enclosure device attached to the host. Fix this by looping over all enclosure devices attached to the host and also by making the find loop recognise that the enclosure devices may be expander remote (i.e. not parented by the host). Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/ses.c')
-rw-r--r--drivers/scsi/ses.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index 4f618f487356..e1b8c828f03a 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -413,10 +413,11 @@ static int ses_intf_add(struct device *cdev,
if (!scsi_device_enclosure(sdev)) {
/* not an enclosure, but might be in one */
- edev = enclosure_find(&sdev->host->shost_gendev);
- if (edev) {
+ struct enclosure_device *prev = NULL;
+
+ while ((edev = enclosure_find(&sdev->host->shost_gendev, prev)) != NULL) {
ses_match_to_enclosure(edev, sdev);
- put_device(&edev->edev);
+ prev = edev;
}
return -ENODEV;
}
@@ -625,7 +626,8 @@ static void ses_intf_remove(struct device *cdev,
if (!scsi_device_enclosure(sdev))
return;
- edev = enclosure_find(cdev->parent);
+ /* exact match to this enclosure */
+ edev = enclosure_find(cdev->parent, NULL);
if (!edev)
return;