usb: storage: fix module reference for scsi host

While accessing a unusual usb storage (ums-alauda, ums-cypress, ...),
the module reference count is not incremented.  Because these drivers
allocate scsi hosts with usb_stor_host_template defined in usb-storage
module.  So these drivers always can be unloaded.

This fixes it by preparing scsi host template which is initialized
at module_init() for each ums-* driver.  In order to minimize the
difference in ums-* drivers, introduce module_usb_stor_driver() helper
macro which is same as module_usb_driver() except that it also
initializes scsi host template.

Signed-off-by: Akinobu Mita <[email protected]>
Cc: Vinayak Holikatti <[email protected]>
Cc: Dolev Raviv <[email protected]>
Cc: Sujit Reddy Thumma <[email protected]>
Cc: Subhash Jadavani <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Cc: Matthew Dharm <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Acked-by: Alan Stern <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions