From aa519be34f45954f33a6c20430deac8e544a180f Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Wed, 6 May 2015 18:24:21 +0900 Subject: 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 Cc: Vinayak Holikatti Cc: Dolev Raviv Cc: Sujit Reddy Thumma Cc: Subhash Jadavani Cc: Christoph Hellwig Cc: "James E.J. Bottomley" Cc: Matthew Dharm Cc: Greg Kroah-Hartman Cc: "David S. Miller" Cc: Hannes Reinecke Cc: linux-usb@vger.kernel.org Cc: usb-storage@lists.one-eyed-alien.net Cc: linux-scsi@vger.kernel.org Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/cypress_atacb.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'drivers/usb/storage/cypress_atacb.c') diff --git a/drivers/usb/storage/cypress_atacb.c b/drivers/usb/storage/cypress_atacb.c index b3466d1395f2..c80d3dec9a34 100644 --- a/drivers/usb/storage/cypress_atacb.c +++ b/drivers/usb/storage/cypress_atacb.c @@ -30,6 +30,8 @@ #include "scsiglue.h" #include "debug.h" +#define DRV_NAME "ums-cypress" + MODULE_DESCRIPTION("SAT support for Cypress USB/ATA bridges with ATACB"); MODULE_AUTHOR("Matthieu Castet "); MODULE_LICENSE("GPL"); @@ -241,6 +243,7 @@ end: srb->cmd_len = 12; } +static struct scsi_host_template cypress_host_template; static int cypress_probe(struct usb_interface *intf, const struct usb_device_id *id) @@ -250,7 +253,8 @@ static int cypress_probe(struct usb_interface *intf, struct usb_device *device; result = usb_stor_probe1(&us, intf, id, - (id - cypress_usb_ids) + cypress_unusual_dev_list); + (id - cypress_usb_ids) + cypress_unusual_dev_list, + &cypress_host_template); if (result) return result; @@ -273,7 +277,7 @@ static int cypress_probe(struct usb_interface *intf, } static struct usb_driver cypress_driver = { - .name = "ums-cypress", + .name = DRV_NAME, .probe = cypress_probe, .disconnect = usb_stor_disconnect, .suspend = usb_stor_suspend, @@ -286,4 +290,4 @@ static struct usb_driver cypress_driver = { .no_dynamic_id = 1, }; -module_usb_driver(cypress_driver); +module_usb_stor_driver(cypress_driver, cypress_host_template, DRV_NAME); -- cgit 1.4.1