usb-storage: make datafab a separate module

This patch (as1213) converts usb-storage's datafab subdriver into a
separate module.

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

8 files changed, 202 insertions, 142 deletions

diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
index 14508b8a55fb..7dac413e0f2f 100644
--- a/drivers/usb/storage/Kconfig
+++ b/drivers/usb/storage/Kconfig
@@ -32,12 +32,14 @@ config USB_STORAGE_DEBUG
           verbose debugging messages.
 
 config USB_STORAGE_DATAFAB
-        bool "Datafab Compact Flash Reader support"
+        tristate "Datafab Compact Flash Reader support"
         depends on USB_STORAGE
         help
           Support for certain Datafab CompactFlash readers.
           Datafab has a web page at <http://www.datafabusa.com/>.
 
+          If this driver is compiled as a module, it will be named ums-datafab.
+
 config USB_STORAGE_FREECOM
         tristate "Freecom USB/ATAPI Bridge support"
         depends on USB_STORAGE
diff --git a/drivers/usb/storage/Makefile b/drivers/usb/storage/Makefile
index 93e91ec3a2d2..0f78bd680f0f 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_DATAFAB)   += datafab.o
 usb-storage-obj-$(CONFIG_USB_STORAGE_JUMPSHOT)  += jumpshot.o
 usb-storage-obj-$(CONFIG_USB_STORAGE_ALAUDA)    += alauda.o
 usb-storage-obj-$(CONFIG_USB_STORAGE_ONETOUCH)  += onetouch.o
@@ -26,6 +25,7 @@ else
 endif
 
 obj-$(CONFIG_USB_STORAGE_CYPRESS_ATACB) += ums-cypress.o
+obj-$(CONFIG_USB_STORAGE_DATAFAB)       += ums-datafab.o
 obj-$(CONFIG_USB_STORAGE_FREECOM)       += ums-freecom.o
 obj-$(CONFIG_USB_STORAGE_ISD200)        += ums-isd200.o
 obj-$(CONFIG_USB_STORAGE_SDDR09)        += ums-sddr09.o
@@ -33,6 +33,7 @@ obj-$(CONFIG_USB_STORAGE_SDDR55)	+= ums-sddr55.o
 obj-$(CONFIG_USB_STORAGE_USBAT)         += ums-usbat.o
 
 ums-cypress-objs        := cypress_atacb.o
+ums-datafab-objs        := datafab.o
 ums-freecom-objs        := freecom.o
 ums-isd200-objs         := isd200.o
 ums-sddr09-objs         := sddr09.o
diff --git a/drivers/usb/storage/datafab.c b/drivers/usb/storage/datafab.c
index 17f1ae232919..2d8d83519090 100644
--- a/drivers/usb/storage/datafab.c
+++ b/drivers/usb/storage/datafab.c
@@ -49,6 +49,7 @@
  */
 
 #include <linux/errno.h>
+#include <linux/module.h>
 #include <linux/slab.h>
 
 #include <scsi/scsi.h>
@@ -58,12 +59,61 @@
 #include "transport.h"
 #include "protocol.h"
 #include "debug.h"
-#include "datafab.h"
+
+struct datafab_info {
+        unsigned long   sectors;        /* total sector count */
+        unsigned long   ssize;          /* sector size in bytes */
+        signed char     lun;            /* used for dual-slot readers */
+
+        /* the following aren't used yet */
+        unsigned char   sense_key;
+        unsigned long   sense_asc;      /* additional sense code */
+        unsigned long   sense_ascq;     /* additional sense code qualifier */
+};
 
 static int datafab_determine_lun(struct us_data *us,
                                  struct datafab_info *info);
 
 
+/*
+ * 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 datafab_usb_ids[] = {
+#       include "unusual_datafab.h"
+        { }             /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, datafab_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 datafab_unusual_dev_list[] = {
+#       include "unusual_datafab.h"
+        { }             /* Terminating entry */
+};
+
+#undef UNUSUAL_DEV
+
+
 static inline int
 datafab_bulk_read(struct us_data *us, unsigned char *data, unsigned int len) {
         if (len == 0)
@@ -500,7 +550,7 @@ static void datafab_info_destructor(void *extra)
 
 // Transport for the Datafab MDCFE-B
 //
-int datafab_transport(struct scsi_cmnd * srb, struct us_data *us)
+static int datafab_transport(struct scsi_cmnd *srb, struct us_data *us)
 {
         struct datafab_info *info;
         int rc;
@@ -665,3 +715,49 @@ int datafab_transport(struct scsi_cmnd * srb, struct us_data *us)
         info->sense_ascq = 0x00;
         return USB_STOR_TRANSPORT_FAILED;
 }
+
+static int datafab_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 - datafab_usb_ids) + datafab_unusual_dev_list);
+        if (result)
+                return result;
+
+        us->transport_name  = "Datafab Bulk-Only";
+        us->transport = datafab_transport;
+        us->transport_reset = usb_stor_Bulk_reset;
+        us->max_lun = 1;
+
+        result = usb_stor_probe2(us);
+        return result;
+}
+
+static struct usb_driver datafab_driver = {
+        .name =         "ums-datafab",
+        .probe =        datafab_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 =     datafab_usb_ids,
+        .soft_unbind =  1,
+};
+
+static int __init datafab_init(void)
+{
+        return usb_register(&datafab_driver);
+}
+
+static void __exit datafab_exit(void)
+{
+        usb_deregister(&datafab_driver);
+}
+
+module_init(datafab_init);
+module_exit(datafab_exit);
diff --git a/drivers/usb/storage/datafab.h b/drivers/usb/storage/datafab.h
deleted file mode 100644
index 32e3f271e582..000000000000
--- a/drivers/usb/storage/datafab.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Driver for Datafab MDCFE-B USB Compact Flash reader
- * Header File
- *
- * Current development and maintenance by:
- *   (c) 2000 Jimmie Mayfield (mayfield+datafab@sackheads.org)
- *
- * See datafab.c for more explanation
- *
- * 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
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef _USB_DATAFAB_MDCFE_B_H
-#define _USB_DATAFAB_MDCFE_B_H
-
-extern int datafab_transport(struct scsi_cmnd *srb, struct us_data *us);
-
-struct datafab_info {
-        unsigned long   sectors;        // total sector count
-        unsigned long   ssize;          // sector size in bytes
-        signed char     lun;            // used for dual-slot readers
-        
-        // the following aren't used yet
-        unsigned char   sense_key;
-        unsigned long   sense_asc;      // additional sense code
-        unsigned long   sense_ascq;     // additional sense code qualifier
-};
-
-#endif
diff --git a/drivers/usb/storage/unusual_datafab.h b/drivers/usb/storage/unusual_datafab.h
new file mode 100644
index 000000000000..c9298ce9f223
--- /dev/null
+++ b/drivers/usb/storage/unusual_datafab.h
@@ -0,0 +1,98 @@
+/* Unusual Devices File for the Datafab USB Compact Flash reader
+ *
+ * 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
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#if defined(CONFIG_USB_STORAGE_DATAFAB) || \
+                defined(CONFIG_USB_STORAGE_DATAFAB_MODULE)
+
+UNUSUAL_DEV(  0x07c4, 0xa000, 0x0000, 0x0015,
+                "Datafab",
+                "MDCFE-B USB CF Reader",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                0),
+
+/*
+ * The following Datafab-based devices may or may not work
+ * using the current driver...the 0xffff is arbitrary since I
+ * don't know what device versions exist for these guys.
+ *
+ * The 0xa003 and 0xa004 devices in particular I'm curious about.
+ * I'm told they exist but so far nobody has come forward to say that
+ * they work with this driver.  Given the success we've had getting
+ * other Datafab-based cards operational with this driver, I've decided
+ * to leave these two devices in the list.
+ */
+UNUSUAL_DEV( 0x07c4, 0xa001, 0x0000, 0xffff,
+                "SIIG/Datafab",
+                "SIIG/Datafab Memory Stick+CF Reader/Writer",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                0),
+
+/* Reported by Josef Reisinger <josef.reisinger@netcologne.de> */
+UNUSUAL_DEV( 0x07c4, 0xa002, 0x0000, 0xffff,
+                "Datafab/Unknown",
+                "MD2/MD3 Disk enclosure",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                US_FL_SINGLE_LUN),
+
+UNUSUAL_DEV( 0x07c4, 0xa003, 0x0000, 0xffff,
+                "Datafab/Unknown",
+                "Datafab-based Reader",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                0),
+
+UNUSUAL_DEV( 0x07c4, 0xa004, 0x0000, 0xffff,
+                "Datafab/Unknown",
+                "Datafab-based Reader",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                0),
+
+UNUSUAL_DEV( 0x07c4, 0xa005, 0x0000, 0xffff,
+                "PNY/Datafab",
+                "PNY/Datafab CF+SM Reader",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                0),
+
+UNUSUAL_DEV( 0x07c4, 0xa006, 0x0000, 0xffff,
+                "Simple Tech/Datafab",
+                "Simple Tech/Datafab CF+SM Reader",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                0),
+
+/* Submitted by Olaf Hering <olh@suse.de> */
+UNUSUAL_DEV(  0x07c4, 0xa109, 0x0000, 0xffff,
+                "Datafab Systems, Inc.",
+                "USB to CF + SM Combo (LC1)",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                0),
+
+/* Reported by Felix Moeller <felix@derklecks.de>
+ * in Germany this is sold by Hama with the productnumber 46952
+ * as "DualSlot CompactFlash(TM) & MStick Drive USB"
+ */
+UNUSUAL_DEV(  0x07c4, 0xa10b, 0x0000, 0xffff,
+                "DataFab Systems Inc.",
+                "USB CF+MS",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                0),
+
+UNUSUAL_DEV( 0x0c0b, 0xa109, 0x0000, 0xffff,
+                "Acomdata",
+                "CF",
+                US_SC_SCSI, US_PR_DATAFAB, NULL,
+                US_FL_SINGLE_LUN),
+
+#endif /* defined(CONFIG_USB_STORAGE_DATAFAB) || ... */
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index eef2075cf2eb..a5867c6d761b 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -992,84 +992,6 @@ UNUSUAL_DEV(  0x07b4, 0x010a, 0x0102, 0x0102,
                 US_SC_SCSI, US_PR_ALAUDA, init_alauda, 0 ),
 #endif
 
-#ifdef CONFIG_USB_STORAGE_DATAFAB
-UNUSUAL_DEV(  0x07c4, 0xa000, 0x0000, 0x0015,
-                "Datafab",
-                "MDCFE-B USB CF Reader",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                0 ),
-
-/*
- * The following Datafab-based devices may or may not work
- * using the current driver...the 0xffff is arbitrary since I
- * don't know what device versions exist for these guys.
- *
- * The 0xa003 and 0xa004 devices in particular I'm curious about.
- * I'm told they exist but so far nobody has come forward to say that
- * they work with this driver.  Given the success we've had getting
- * other Datafab-based cards operational with this driver, I've decided
- * to leave these two devices in the list.
- */
-UNUSUAL_DEV( 0x07c4, 0xa001, 0x0000, 0xffff,
-                "SIIG/Datafab",
-                "SIIG/Datafab Memory Stick+CF Reader/Writer",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                0 ),
-
-/* Reported by Josef Reisinger <josef.reisinger@netcologne.de> */
-UNUSUAL_DEV( 0x07c4, 0xa002, 0x0000, 0xffff,
-                "Datafab/Unknown",
-                "MD2/MD3 Disk enclosure",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                US_FL_SINGLE_LUN ),
-
-UNUSUAL_DEV( 0x07c4, 0xa003, 0x0000, 0xffff,
-                "Datafab/Unknown",
-                "Datafab-based Reader",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                0 ),
-
-UNUSUAL_DEV( 0x07c4, 0xa004, 0x0000, 0xffff,
-                "Datafab/Unknown",
-                "Datafab-based Reader",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                0 ),
-
-UNUSUAL_DEV( 0x07c4, 0xa005, 0x0000, 0xffff,
-                "PNY/Datafab",
-                "PNY/Datafab CF+SM Reader",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                0 ),
-
-UNUSUAL_DEV( 0x07c4, 0xa006, 0x0000, 0xffff,
-                "Simple Tech/Datafab",
-                "Simple Tech/Datafab CF+SM Reader",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                0 ),
-#endif
-
-#ifdef CONFIG_USB_STORAGE_DATAFAB
-/* Submitted by Olaf Hering <olh@suse.de> */
-UNUSUAL_DEV(  0x07c4, 0xa109, 0x0000, 0xffff,
-                "Datafab Systems, Inc.",
-                "USB to CF + SM Combo (LC1)",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                0 ),
-#endif
-
-#ifdef CONFIG_USB_STORAGE_DATAFAB
-/* Reported by Felix Moeller <felix@derklecks.de>
- * in Germany this is sold by Hama with the productnumber 46952
- * as "DualSlot CompactFlash(TM) & MStick Drive USB"
- */
-UNUSUAL_DEV(  0x07c4, 0xa10b, 0x0000, 0xffff,
-                "DataFab Systems Inc.",
-                "USB CF+MS",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                0 ),
-
-#endif
-
 /* Datafab KECF-USB / Sagatek DCS-CF / Simpletech Flashlink UCF-100
  * Only revision 1.13 tested (same for all of the above devices,
  * based on the Datafab DF-UG-07 chip).  Needed for US_FL_FIX_INQUIRY.
@@ -1273,14 +1195,6 @@ UNUSUAL_DEV( 0x0bc2, 0x3010, 0x0000, 0x0000,
                 US_SC_DEVICE, US_PR_DEVICE, NULL,
                 US_FL_SANE_SENSE ),
 
-#ifdef CONFIG_USB_STORAGE_DATAFAB
-UNUSUAL_DEV( 0x0c0b, 0xa109, 0x0000, 0xffff,
-                "Acomdata",
-                "CF",
-                US_SC_SCSI, US_PR_DATAFAB, NULL,
-                US_FL_SINGLE_LUN ),
-#endif
-
 UNUSUAL_DEV(  0x0d49, 0x7310, 0x0000, 0x9999,
                 "Maxtor",
                 "USB to SATA",
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 985275d5d4c5..a537b3513b9b 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_DATAFAB
-#include "datafab.h"
-#endif
 #ifdef CONFIG_USB_STORAGE_JUMPSHOT
 #include "jumpshot.h"
 #endif
@@ -604,15 +601,6 @@ static void get_transport(struct us_data *us)
                 us->transport_reset = usb_stor_Bulk_reset;
                 break;
 
-#ifdef CONFIG_USB_STORAGE_DATAFAB
-        case US_PR_DATAFAB:
-                us->transport_name  = "Datafab Bulk-Only";
-                us->transport = datafab_transport;
-                us->transport_reset = usb_stor_Bulk_reset;
-                us->max_lun = 1;
-                break;
-#endif
-
 #ifdef CONFIG_USB_STORAGE_JUMPSHOT
         case US_PR_JUMPSHOT:
                 us->transport_name  = "Lexar Jumpshot Control/Bulk";
diff --git a/drivers/usb/storage/usual-tables.c b/drivers/usb/storage/usual-tables.c
index a50f0eefb739..c6ceac62cf60 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_datafab.h"
 #       include "unusual_freecom.h"
 #       include "unusual_isd200.h"
 #       include "unusual_sddr09.h"