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authorHannes Reinecke <hare@suse.de>2016-02-19 11:17:16 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2016-02-24 05:27:02 +0300
commitd3d328919f278eda489a482541583f79987ad0e2 (patch)
tree5eaccbc687db4958c75122f10aad6eee344d101a /drivers/scsi/device_handler
parent9d2c30395213166e0b5614fe97576a789864e5de (diff)
downloadlinux-d3d328919f278eda489a482541583f79987ad0e2.tar.xz
scsi_dh: add 'rescan' callback
If a device needs to be rescanned the device_handler might need to be rechecked, too. So add a 'rescan' callback to the device handler and call it upon scsi_rescan_device(). The rescan callback will be invoked from the Unit Attention handling of ASC/ASCQ 3F 03 (INQUIRY DATA HAS CHANGED). Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/device_handler')
-rw-r--r--drivers/scsi/device_handler/scsi_dh_alua.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 3d8a254607e1..3d994aac2b85 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -1026,6 +1026,13 @@ static int alua_prep_fn(struct scsi_device *sdev, struct request *req)
}
+static void alua_rescan(struct scsi_device *sdev)
+{
+ struct alua_dh_data *h = sdev->handler_data;
+
+ alua_initialize(sdev, h);
+}
+
/*
* alua_bus_attach - Attach device handler
* @sdev: device to be attached to
@@ -1086,6 +1093,7 @@ static struct scsi_device_handler alua_dh = {
.prep_fn = alua_prep_fn,
.check_sense = alua_check_sense,
.activate = alua_activate,
+ .rescan = alua_rescan,
.set_params = alua_set_params,
};