usb-storage: make freecom a separate module

This patch (as1212) converts usb-storage's freecom subdriver into a
separate module.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

7 files changed, 104 insertions, 42 deletions

diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
index 44c6b1940f77..14508b8a55fb 100644
--- a/drivers/usb/storage/Kconfig
+++ b/drivers/usb/storage/Kconfig
@@ -39,12 +39,14 @@ config USB_STORAGE_DATAFAB
           Datafab has a web page at <http://www.datafabusa.com/>.
 
 config USB_STORAGE_FREECOM
-        bool "Freecom USB/ATAPI Bridge support"
+        tristate "Freecom USB/ATAPI Bridge support"
         depends on USB_STORAGE
         help
           Support for the Freecom USB to IDE/ATAPI adaptor.
           Freecom has a web page at <http://www.freecom.de/>.
 
+          If this driver is compiled as a module, it will be named ums-freecom.
+
 config USB_STORAGE_ISD200
         tristate "ISD-200 USB/ATA Bridge support"
         depends on USB_STORAGE
diff --git a/drivers/usb/storage/Makefile b/drivers/usb/storage/Makefile
index 2387368cb7ae..93e91ec3a2d2 100644
--- a/drivers/usb/storage/Makefile
+++ b/drivers/usb/storage/Makefile
@@ -10,7 +10,6 @@ EXTRA_CFLAGS	:= -Idrivers/scsi
 obj-$(CONFIG_USB_STORAGE)       += usb-storage.o
 
 usb-storage-obj-$(CONFIG_USB_STORAGE_DEBUG)     += debug.o
-usb-storage-obj-$(CONFIG_USB_STORAGE_FREECOM)   += freecom.o
 usb-storage-obj-$(CONFIG_USB_STORAGE_DATAFAB)   += datafab.o
 usb-storage-obj-$(CONFIG_USB_STORAGE_JUMPSHOT)  += jumpshot.o
 usb-storage-obj-$(CONFIG_USB_STORAGE_ALAUDA)    += alauda.o
@@ -27,12 +26,14 @@ else
 endif
 
 obj-$(CONFIG_USB_STORAGE_CYPRESS_ATACB) += ums-cypress.o
+obj-$(CONFIG_USB_STORAGE_FREECOM)       += ums-freecom.o
 obj-$(CONFIG_USB_STORAGE_ISD200)        += ums-isd200.o
 obj-$(CONFIG_USB_STORAGE_SDDR09)        += ums-sddr09.o
 obj-$(CONFIG_USB_STORAGE_SDDR55)        += ums-sddr55.o
 obj-$(CONFIG_USB_STORAGE_USBAT)         += ums-usbat.o
 
 ums-cypress-objs        := cypress_atacb.o
+ums-freecom-objs        := freecom.o
 ums-isd200-objs         := isd200.o
 ums-sddr09-objs         := sddr09.o
 ums-sddr55-objs         := sddr55.o
diff --git a/drivers/usb/storage/freecom.c b/drivers/usb/storage/freecom.c
index 73ac7262239e..393047b3890d 100644
--- a/drivers/usb/storage/freecom.c
+++ b/drivers/usb/storage/freecom.c
@@ -26,6 +26,7 @@
  * (http://www.freecom.de/)
  */
 
+#include <linux/module.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 
@@ -33,7 +34,6 @@
 #include "transport.h"
 #include "protocol.h"
 #include "debug.h"
-#include "freecom.h"
 
 #ifdef CONFIG_USB_STORAGE_DEBUG
 static void pdump (void *, int);
@@ -103,6 +103,47 @@ struct freecom_status {
 #define FCM_PACKET_LENGTH               64
 #define FCM_STATUS_PACKET_LENGTH        4
 
+static int init_freecom(struct us_data *us);
+
+
+/*
+ * The table of devices
+ */
+#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
+                    vendorName, productName, useProtocol, useTransport, \
+                    initFunction, flags) \
+{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
+  .driver_info = (flags)|(USB_US_TYPE_STOR<<24) }
+
+struct usb_device_id freecom_usb_ids[] = {
+#       include "unusual_freecom.h"
+        { }             /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, freecom_usb_ids);
+
+#undef UNUSUAL_DEV
+
+/*
+ * The flags table
+ */
+#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
+                    vendor_name, product_name, use_protocol, use_transport, \
+                    init_function, Flags) \
+{ \
+        .vendorName = vendor_name,      \
+        .productName = product_name,    \
+        .useProtocol = use_protocol,    \
+        .useTransport = use_transport,  \
+        .initFunction = init_function,  \
+}
+
+static struct us_unusual_dev freecom_unusual_dev_list[] = {
+#       include "unusual_freecom.h"
+        { }             /* Terminating entry */
+};
+
+#undef UNUSUAL_DEV
+
 static int
 freecom_readdata (struct scsi_cmnd *srb, struct us_data *us,
                 unsigned int ipipe, unsigned int opipe, int count)
@@ -173,7 +214,7 @@ freecom_writedata (struct scsi_cmnd *srb, struct us_data *us,
  * Transport for the Freecom USB/IDE adaptor.
  *
  */
-int freecom_transport(struct scsi_cmnd *srb, struct us_data *us)
+static int freecom_transport(struct scsi_cmnd *srb, struct us_data *us)
 {
         struct freecom_cb_wrap *fcb;
         struct freecom_status  *fst;
@@ -377,8 +418,7 @@ int freecom_transport(struct scsi_cmnd *srb, struct us_data *us)
         return USB_STOR_TRANSPORT_GOOD;
 }
 
-int
-freecom_init (struct us_data *us)
+static int init_freecom(struct us_data *us)
 {
         int result;
         char *buffer = us->iobuf;
@@ -417,7 +457,7 @@ freecom_init (struct us_data *us)
         return USB_STOR_TRANSPORT_GOOD;
 }
 
-int usb_stor_freecom_reset(struct us_data *us)
+static int usb_stor_freecom_reset(struct us_data *us)
 {
         printk (KERN_CRIT "freecom reset called\n");
 
@@ -479,3 +519,48 @@ static void pdump (void *ibuffer, int length)
 }
 #endif
 
+static int freecom_probe(struct usb_interface *intf,
+                         const struct usb_device_id *id)
+{
+        struct us_data *us;
+        int result;
+
+        result = usb_stor_probe1(&us, intf, id,
+                        (id - freecom_usb_ids) + freecom_unusual_dev_list);
+        if (result)
+                return result;
+
+        us->transport_name = "Freecom";
+        us->transport = freecom_transport;
+        us->transport_reset = usb_stor_freecom_reset;
+        us->max_lun = 0;
+
+        result = usb_stor_probe2(us);
+        return result;
+}
+
+static struct usb_driver freecom_driver = {
+        .name =         "ums-freecom",
+        .probe =        freecom_probe,
+        .disconnect =   usb_stor_disconnect,
+        .suspend =      usb_stor_suspend,
+        .resume =       usb_stor_resume,
+        .reset_resume = usb_stor_reset_resume,
+        .pre_reset =    usb_stor_pre_reset,
+        .post_reset =   usb_stor_post_reset,
+        .id_table =     freecom_usb_ids,
+        .soft_unbind =  1,
+};
+
+static int __init freecom_init(void)
+{
+        return usb_register(&freecom_driver);
+}
+
+static void __exit freecom_exit(void)
+{
+        usb_deregister(&freecom_driver);
+}
+
+module_init(freecom_init);
+module_exit(freecom_exit);
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 6462c4c54dc0..eef2075cf2eb 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -958,13 +958,6 @@ UNUSUAL_DEV(  0x0781, 0x0100, 0x0100, 0x0100,
                 US_SC_SCSI, US_PR_CB, NULL,
                 US_FL_SINGLE_LUN ),
 
-#ifdef CONFIG_USB_STORAGE_FREECOM
-UNUSUAL_DEV(  0x07ab, 0xfc01, 0x0000, 0x9999,
-                "Freecom",
-                "USB-IDE",
-                US_SC_QIC, US_PR_FREECOM, freecom_init, 0),
-#endif
-
 /* Reported by Eero Volotinen <eero@ping-viini.org> */
 UNUSUAL_DEV(  0x07ab, 0xfccd, 0x0000, 0x9999,
                 "Freecom Technologies",
diff --git a/drivers/usb/storage/freecom.h b/drivers/usb/storage/unusual_freecom.h
index 20d0fe6ba0c8..375867942391 100644
--- a/drivers/usb/storage/freecom.h
+++ b/drivers/usb/storage/unusual_freecom.h
@@ -1,13 +1,4 @@
-/* Driver for Freecom USB/IDE adaptor
- *
- * Freecom v0.1:
- *
- * First release
- *
- * Current development and maintenance by:
- *   (c) 2000 David Brown <usb-storage@davidb.org>
- *
- * See freecom.c for more explanation
+/* Unusual Devices File for the Freecom USB/IDE adaptor
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -24,11 +15,12 @@
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#ifndef _FREECOM_USB_H
-#define _FREECOM_USB_H
+#if defined(CONFIG_USB_STORAGE_FREECOM) || \
+                defined(CONFIG_USB_STORAGE_FREECOM_MODULE)
 
-extern int freecom_transport(struct scsi_cmnd *srb, struct us_data *us);
-extern int usb_stor_freecom_reset(struct us_data *us);
-extern int freecom_init (struct us_data *us);
+UNUSUAL_DEV(  0x07ab, 0xfc01, 0x0000, 0x9999,
+                "Freecom",
+                "USB-IDE",
+                US_SC_QIC, US_PR_FREECOM, init_freecom, 0),
 
-#endif
+#endif /* defined(CONFIG_USB_STORAGE_FREECOM) || ... */
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 3ad22a8142cc..985275d5d4c5 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -66,9 +66,6 @@
 #include "debug.h"
 #include "initializers.h"
 
-#ifdef CONFIG_USB_STORAGE_FREECOM
-#include "freecom.h"
-#endif
 #ifdef CONFIG_USB_STORAGE_DATAFAB
 #include "datafab.h"
 #endif
@@ -607,15 +604,6 @@ static void get_transport(struct us_data *us)
                 us->transport_reset = usb_stor_Bulk_reset;
                 break;
 
-#ifdef CONFIG_USB_STORAGE_FREECOM
-        case US_PR_FREECOM:
-                us->transport_name = "Freecom";
-                us->transport = freecom_transport;
-                us->transport_reset = usb_stor_freecom_reset;
-                us->max_lun = 0;
-                break;
-#endif
-
 #ifdef CONFIG_USB_STORAGE_DATAFAB
         case US_PR_DATAFAB:
                 us->transport_name  = "Datafab Bulk-Only";
diff --git a/drivers/usb/storage/usual-tables.c b/drivers/usb/storage/usual-tables.c
index 899a8c8da712..a50f0eefb739 100644
--- a/drivers/usb/storage/usual-tables.c
+++ b/drivers/usb/storage/usual-tables.c
@@ -78,6 +78,7 @@ struct ignore_entry {
 
 static struct ignore_entry ignore_ids[] = {
 #       include "unusual_cypress.h"
+#       include "unusual_freecom.h"
 #       include "unusual_isd200.h"
 #       include "unusual_sddr09.h"
 #       include "unusual_sddr55.h"