diff options
| author | Hannes Reinecke <hare@suse.de> | 2016-02-19 09:17:16 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-02-23 21:27:02 -0500 |
| commit | d3d328919f278eda489a482541583f79987ad0e2 (patch) | |
| tree | 5eaccbc687db4958c75122f10aad6eee344d101a /drivers/scsi/scsi_scan.c | |
| parent | 9d2c30395213166e0b5614fe97576a789864e5de (diff) | |
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/scsi_scan.c')
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 420239c2861c..97074c91e328 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -43,6 +43,7 @@ #include <scsi/scsi_devinfo.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport.h> +#include <scsi/scsi_dh.h> #include <scsi/scsi_eh.h> #include "scsi_priv.h" @@ -1524,9 +1525,14 @@ EXPORT_SYMBOL(scsi_add_device); void scsi_rescan_device(struct device *dev) { + struct scsi_device *sdev = to_scsi_device(dev); + device_lock(dev); - scsi_attach_vpd(to_scsi_device(dev)); + scsi_attach_vpd(sdev); + + if (sdev->handler && sdev->handler->rescan) + sdev->handler->rescan(sdev); if (dev->driver && try_module_get(dev->driver->owner)) { struct scsi_driver *drv = to_scsi_driver(dev->driver); |