[SCSI] Remove devfs support from the SCSI subsystem

As devfs has been disabled from the kernel tree for a number of months
now (5 to be exact), here's a patch against 2.6.16-rc1-git1 that removes
support for it from the SCSI subsystem.

The patch also removes the scsi_disk devfs_name field as it's no longer
needed.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

7 files changed, 5 insertions, 62 deletions

diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c
index d9946bd95492..b9f6084fdd9e 100644
--- a/drivers/scsi/osst.c
+++ b/drivers/scsi/osst.c
@@ -48,7 +48,6 @@ static const char * osst_version = "0.99.3";
 #include <linux/vmalloc.h>
 #include <linux/blkdev.h>
 #include <linux/moduleparam.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/delay.h>
 #include <asm/uaccess.h>
 #include <asm/dma.h>
@@ -107,8 +106,6 @@ static struct osst_dev_parm {
 };
 #endif
 
-static char *osst_formats[ST_NBR_MODES] ={"", "l", "m", "a"};
-
 /* Some default definitions have been moved to osst_options.h */
 #define OSST_BUFFER_SIZE (OSST_BUFFER_BLOCKS * ST_KILOBYTE)
 #define OSST_WRITE_THRESHOLD (OSST_WRITE_THRESHOLD_BLOCKS * ST_KILOBYTE)
@@ -5667,7 +5664,7 @@ static int osst_probe(struct device *dev)
         struct st_partstat * STps;
         struct osst_buffer * buffer;
         struct gendisk     * drive;
-        int                  i, mode, dev_num;
+        int                  i, dev_num;
 
         if (SDp->type != TYPE_TAPE || !osst_supports(SDp))
                 return -ENODEV;
@@ -5803,18 +5800,6 @@ static int osst_probe(struct device *dev)
                 snprintf(name, 8, "%s%s", "n", tape_name(tpnt));
                 osst_sysfs_add(MKDEV(OSST_MAJOR, dev_num + 128), dev, tpnt, name);
         }
-        for (mode = 0; mode < ST_NBR_MODES; ++mode) {
-                /*  Rewind entry  */
-                devfs_mk_cdev(MKDEV(OSST_MAJOR, dev_num + (mode << 5)),
-                                S_IFCHR | S_IRUGO | S_IWUGO,
-                                "%s/ot%s", SDp->devfs_name, osst_formats[mode]);
-
-                /*  No-rewind entry  */
-                devfs_mk_cdev(MKDEV(OSST_MAJOR, dev_num + (mode << 5) + 128),
-                                S_IFCHR | S_IRUGO | S_IWUGO,
-                                "%s/ot%sn", SDp->devfs_name, osst_formats[mode]);
-        }
-        drive->number = devfs_register_tape(SDp->devfs_name);
 
         sdev_printk(KERN_INFO, SDp,
                 "osst :I: Attached OnStream %.5s tape as %s\n",
@@ -5831,7 +5816,7 @@ static int osst_remove(struct device *dev)
 {
         struct scsi_device * SDp = to_scsi_device(dev);
         struct osst_tape * tpnt;
-        int i, mode;
+        int i;
 
         if ((SDp->type != TYPE_TAPE) || (osst_nr_dev <= 0))
                 return 0;
@@ -5842,11 +5827,6 @@ static int osst_remove(struct device *dev)
                         osst_sysfs_destroy(MKDEV(OSST_MAJOR, i));
                         osst_sysfs_destroy(MKDEV(OSST_MAJOR, i+128));
                         tpnt->device = NULL;
-                        for (mode = 0; mode < ST_NBR_MODES; ++mode) {
-                                devfs_remove("%s/ot%s", SDp->devfs_name, osst_formats[mode]);
-                                devfs_remove("%s/ot%sn", SDp->devfs_name, osst_formats[mode]);
-                        }
-                        devfs_unregister_tape(tpnt->drive->number);
                         put_disk(tpnt->drive);
                         os_scsi_tapes[i] = NULL;
                         osst_nr_dev--;
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 11b27ba0cd41..6913b0623167 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -48,7 +48,6 @@
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/completion.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/unistd.h>
 #include <linux/spinlock.h>
 #include <linux/kmod.h>
@@ -1247,7 +1246,6 @@ static int __init init_scsi(void)
         for_each_cpu(i)
                 INIT_LIST_HEAD(&per_cpu(scsi_done_q, i));
 
-        devfs_mk_dir("scsi");
         printk(KERN_NOTICE "SCSI subsystem initialized\n");
         return 0;
 
@@ -1272,7 +1270,6 @@ static void __exit exit_scsi(void)
         scsi_exit_sysctl();
         scsi_exit_hosts();
         scsi_exit_devinfo();
-        devfs_remove("scsi");
         scsi_exit_procfs();
         scsi_exit_queue();
 }
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 74863da1d630..dfdbbd008630 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -687,12 +687,8 @@ static int scsi_add_lun(struct scsi_device *sdev, char *inq_result, int *bflags)
         if (inq_result[7] & 0x10)
                 sdev->sdtr = 1;
 
-        sprintf(sdev->devfs_name, "scsi/host%d/bus%d/target%d/lun%d",
-                                sdev->host->host_no, sdev->channel,
-                                sdev->id, sdev->lun);
-
         /*
-         * End driverfs/devfs code.
+         * End sysfs code.
          */
 
         if ((sdev->scsi_level >= SCSI_2) && (inq_result[7] & 2) &&
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 8ba2d988d051..76b4d14c0b3f 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1571,8 +1571,6 @@ static int sd_probe(struct device *dev)
                         'a' + m1, 'a' + m2, 'a' + m3);
         }
 
-        strcpy(gd->devfs_name, sdp->devfs_name);
-
         gd->private_data = &sdkp->driver;
         gd->queue = sdkp->device->request_queue;
 
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index ecf2f6010e76..06fc8ed720fc 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -44,7 +44,6 @@ static int sg_version_num = 30533;	/* 2 digits for each component */
 #include <linux/poll.h>
 #include <linux/smp_lock.h>
 #include <linux/moduleparam.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/cdev.h>
 #include <linux/seq_file.h>
 #include <linux/blkdev.h>
@@ -1456,14 +1455,10 @@ sg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
         k = error;
         sdp = sg_dev_arr[k];
 
-        devfs_mk_cdev(MKDEV(SCSI_GENERIC_MAJOR, k),
-                        S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP,
-                        "%s/generic", scsidp->devfs_name);
         error = cdev_add(cdev, MKDEV(SCSI_GENERIC_MAJOR, k), 1);
-        if (error) {
-                devfs_remove("%s/generic", scsidp->devfs_name);
+        if (error)
                 goto out;
-        }
+
         sdp->cdev = cdev;
         if (sg_sysfs_valid) {
                 struct class_device * sg_class_member;
@@ -1553,7 +1548,6 @@ sg_remove(struct class_device *cl_dev, struct class_interface *cl_intf)
                 class_device_destroy(sg_sysfs_class, MKDEV(SCSI_GENERIC_MAJOR, k));
                 cdev_del(sdp->cdev);
                 sdp->cdev = NULL;
-                devfs_remove("%s/generic", scsidp->devfs_name);
                 put_disk(sdp->disk);
                 sdp->disk = NULL;
                 if (NULL == sdp->headfp)
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index d8d12a1718bf..328837b7ccb9 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -573,8 +573,6 @@ static int sr_probe(struct device *dev)
         get_capabilities(cd);
         sr_vendor_init(cd);
 
-        snprintf(disk->devfs_name, sizeof(disk->devfs_name),
-                        "%s/cd", sdev->devfs_name);
         disk->driverfs_dev = &sdev->sdev_gendev;
         set_capacity(disk, cd->capacity);
         disk->private_data = &cd->driver;
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index f0606da19d02..31c6eefba9d6 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -35,7 +35,6 @@ static const char *verstr = "20050830";
 #include <linux/spinlock.h>
 #include <linux/blkdev.h>
 #include <linux/moduleparam.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/cdev.h>
 #include <linux/delay.h>
 #include <linux/mutex.h>
@@ -4053,21 +4052,6 @@ static int st_probe(struct device *dev)
                 do_create_class_files(tpnt, dev_num, mode);
         }
 
-        for (mode = 0; mode < ST_NBR_MODES; ++mode) {
-                /* Make sure that the minor numbers corresponding to the four
-                   first modes always get the same names */
-                i = mode << (4 - ST_NBR_MODE_BITS);
-                /*  Rewind entry  */
-                devfs_mk_cdev(MKDEV(SCSI_TAPE_MAJOR, TAPE_MINOR(dev_num, mode, 0)),
-                              S_IFCHR | S_IRUGO | S_IWUGO,
-                              "%s/mt%s", SDp->devfs_name, st_formats[i]);
-                /*  No-rewind entry  */
-                devfs_mk_cdev(MKDEV(SCSI_TAPE_MAJOR, TAPE_MINOR(dev_num, mode, 1)),
-                              S_IFCHR | S_IRUGO | S_IWUGO,
-                              "%s/mt%sn", SDp->devfs_name, st_formats[i]);
-        }
-        disk->number = devfs_register_tape(SDp->devfs_name);
-
         sdev_printk(KERN_WARNING, SDp,
                     "Attached scsi tape %s", tape_name(tpnt));
         printk(KERN_WARNING "%s: try direct i/o: %s (alignment %d B)\n",
@@ -4121,13 +4105,9 @@ static int st_remove(struct device *dev)
                         scsi_tapes[i] = NULL;
                         st_nr_dev--;
                         write_unlock(&st_dev_arr_lock);
-                        devfs_unregister_tape(tpnt->disk->number);
                         sysfs_remove_link(&tpnt->device->sdev_gendev.kobj,
                                           "tape");
                         for (mode = 0; mode < ST_NBR_MODES; ++mode) {
-                                j = mode << (4 - ST_NBR_MODE_BITS);
-                                devfs_remove("%s/mt%s", SDp->devfs_name, st_formats[j]);
-                                devfs_remove("%s/mt%sn", SDp->devfs_name, st_formats[j]);
                                 for (j=0; j < 2; j++) {
                                         class_device_destroy(st_sysfs_class,
                                                              MKDEV(SCSI_TAPE_MAJOR,