[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>

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--;

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();
 }

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) &&

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;
 

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) {
+	if (error)
-		devfs_remove("%s/generic", scsidp->devfs_name);
 		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)

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;

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,

include/scsi/scsi_device.h

@@ -73,7 +73,6 @@ struct scsi_device {
 	unsigned sector_size;	/* size in bytes */
 
 	void *hostdata;		/* available to low-level driver */
-	char devfs_name[256];	/* devfs junk */
 	char type;
 	char scsi_level;
 	char inq_periph_qual;	/* PQ from INQUIRY data */