{
if (link->flags & DL_FLAG_STATELESS)
kref_put(&link->kref, __device_link_del);
+ else if (!device_is_registered(link->consumer))
+ __device_link_del(&link->kref);
else
WARN(1, "Unable to drop a managed device link reference\n");
}
static void ufshcd_slave_destroy(struct scsi_device *sdev)
{
struct ufs_hba *hba;
+ unsigned long flags;
hba = shost_priv(sdev->host);
/* Drop the reference as it won't be needed anymore */
if (ufshcd_scsi_to_upiu_lun(sdev->lun) == UFS_UPIU_UFS_DEVICE_WLUN) {
- unsigned long flags;
-
spin_lock_irqsave(hba->host->host_lock, flags);
hba->sdev_ufs_device = NULL;
spin_unlock_irqrestore(hba->host->host_lock, flags);
+ } else if (hba->sdev_ufs_device) {
+ struct device *supplier = NULL;
+
+ /* Ensure UFS Device WLUN exists and does not disappear */
+ spin_lock_irqsave(hba->host->host_lock, flags);
+ if (hba->sdev_ufs_device) {
+ supplier = &hba->sdev_ufs_device->sdev_gendev;
+ get_device(supplier);
+ }
+ spin_unlock_irqrestore(hba->host->host_lock, flags);
+
+ if (supplier) {
+ /*
+ * If a LUN fails to probe (e.g. absent BOOT WLUN), the
+ * device will not have been registered but can still
+ * have a device link holding a reference to the device.
+ */
+ device_link_remove(&sdev->sdev_gendev, supplier);
+ put_device(supplier);
+ }
}
}