From: Kay Sievers With this patch the floppy driver creates the usual symlink in sysfs to the physical device backing the block device: $tree /sys/block/ /sys/block/ |-- fd0 | |-- dev | |-- device -> ../../devices/platform/floppy0 ... Signed-off-by: Kay Sievers Signed-off-by: Andrew Morton --- 25-akpm/drivers/block/floppy.c | 19 ++++++------------- 1 files changed, 6 insertions(+), 13 deletions(-) diff -puN drivers/block/floppy.c~floppy-add-sysfs-symlink drivers/block/floppy.c --- 25/drivers/block/floppy.c~floppy-add-sysfs-symlink 2005-02-04 02:44:24.054675848 -0800 +++ 25-akpm/drivers/block/floppy.c 2005-02-04 02:44:24.061674784 -0800 @@ -4370,6 +4370,10 @@ int __init floppy_init(void) goto out_flush_work; } + err = platform_device_register(&floppy_device); + if (err) + goto out_flush_work; + for (drive = 0; drive < N_DRIVE; drive++) { if (!(allowed_drive_mask & (1 << drive))) continue; @@ -4379,23 +4383,12 @@ int __init floppy_init(void) disks[drive]->private_data = (void *)(long)drive; disks[drive]->queue = floppy_queue; disks[drive]->flags |= GENHD_FL_REMOVABLE; + disks[drive]->driverfs_dev = &floppy_device.dev; add_disk(disks[drive]); } - err = platform_device_register(&floppy_device); - if (err) - goto out_del_disk; - return 0; -out_del_disk: - for (drive = 0; drive < N_DRIVE; drive++) { - if (!(allowed_drive_mask & (1 << drive))) - continue; - if (fdc_state[FDC(drive)].version == FDC_NONE) - continue; - del_gendisk(disks[drive]); - } out_flush_work: flush_scheduled_work(); if (usage_count) @@ -4600,7 +4593,6 @@ void cleanup_module(void) int drive; init_completion(&device_release); - platform_device_unregister(&floppy_device); blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256); unregister_blkdev(FLOPPY_MAJOR, "fd"); @@ -4614,6 +4606,7 @@ void cleanup_module(void) } put_disk(disks[drive]); } + platform_device_unregister(&floppy_device); devfs_remove("floppy"); del_timer_sync(&fd_timeout); _