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[SCSI] scsi_dh: Check for sdev state in store_dh_state()

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Avoid attaching a hardware handler to a device which is
already scheduled for deletion.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Hannes Reinecke 2011-08-24 10:51:17 +02:00 committed by James Bottomley
parent 46ccf6b55b
commit 6bc8d2a0c6
1 changed files with 4 additions and 0 deletions
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4
drivers/scsi/device_handler/scsi_dh.c
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@ -190,6 +190,10 @@ store_dh_state(struct device *dev, struct device_attribute *attr,
struct scsi_device_handler *scsi_dh;
int err = -EINVAL;
if (sdev->sdev_state == SDEV_CANCEL ||
sdev->sdev_state == SDEV_DEL)
return -ENODEV;
if (!sdev->scsi_dh_data) {
/*
* Attach to a device handler