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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2009-08-01 00:41:22 +0000
committerJames Bottomley <James.Bottomley@suse.de>2009-08-22 17:52:13 -0500
commit43d8eb9cfd0aea93be32181c64e18191b69c211c (patch)
tree76725fe2ea080cb26c7503dbab8226181de1aa04 /drivers/scsi/ses.c
parent163f52b6cf3a639df6a72c7937e0eb88b20f1ef3 (diff)
downloadlwn-43d8eb9cfd0aea93be32181c64e18191b69c211c.tar.gz
lwn-43d8eb9cfd0aea93be32181c64e18191b69c211c.zip
[SCSI] ses: add support for enclosure component hot removal
Right at the moment, hot removal of a device within an enclosure does nothing (because the intf_remove only copes with enclosure removal not with component removal). Fix this by adding a function to remove the component. Also needed to fix the prototype of enclosure_remove_device, since we know the device we've removed but not the internal component number 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.c33
1 files changed, 26 insertions, 7 deletions
diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index e1b8c828f03a..be593c8525b5 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -616,18 +616,26 @@ static int ses_remove(struct device *dev)
return 0;
}
-static void ses_intf_remove(struct device *cdev,
- struct class_interface *intf)
+static void ses_intf_remove_component(struct scsi_device *sdev)
+{
+ struct enclosure_device *edev, *prev = NULL;
+
+ while ((edev = enclosure_find(&sdev->host->shost_gendev, prev)) != NULL) {
+ prev = edev;
+ if (!enclosure_remove_device(edev, &sdev->sdev_gendev))
+ break;
+ }
+ if (edev)
+ put_device(&edev->edev);
+}
+
+static void ses_intf_remove_enclosure(struct scsi_device *sdev)
{
- struct scsi_device *sdev = to_scsi_device(cdev->parent);
struct enclosure_device *edev;
struct ses_device *ses_dev;
- if (!scsi_device_enclosure(sdev))
- return;
-
/* exact match to this enclosure */
- edev = enclosure_find(cdev->parent, NULL);
+ edev = enclosure_find(&sdev->sdev_gendev, NULL);
if (!edev)
return;
@@ -645,6 +653,17 @@ static void ses_intf_remove(struct device *cdev,
enclosure_unregister(edev);
}
+static void ses_intf_remove(struct device *cdev,
+ struct class_interface *intf)
+{
+ struct scsi_device *sdev = to_scsi_device(cdev->parent);
+
+ if (!scsi_device_enclosure(sdev))
+ ses_intf_remove_component(sdev);
+ else
+ ses_intf_remove_enclosure(sdev);
+}
+
static struct class_interface ses_interface = {
.add_dev = ses_intf_add,
.remove_dev = ses_intf_remove,