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block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers 

In-kernel disk event polling doesn't matter for legacy/fringe drivers
and may lead to infinite event loop if ->check_events() implementation
generates events on level condition instead of edge.

Now that block layer supports suppressing exporting unlisted events,
simply leaving disk->events cleared allows these drivers to keep the
internal revalidation behavior intact while avoiding weird
interactions with userland event handler.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Tejun Heo 2011-04-21 21:32:55 +02:00 committed by Jens Axboe
parent 91e8549bde
commit 9fd097b149
15 changed files with 0 additions and 15 deletions
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1
drivers/block/DAC960.c
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@ -2547,7 +2547,6 @@ static bool DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
disk->major = MajorNumber;
disk->first_minor = n << DAC960_MaxPartitionsBits;
disk->fops = &DAC960_BlockDeviceOperations;
disk->events = DISK_EVENT_MEDIA_CHANGE;
}
/*
Indicate the Block Device Registration completed successfully,

1
drivers/block/amiflop.c
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@ -1736,7 +1736,6 @@ static int __init fd_probe_drives(void)
disk->major = FLOPPY_MAJOR;
disk->first_minor = drive;
disk->fops = &floppy_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
sprintf(disk->disk_name, "fd%d", drive);
disk->private_data = &unit[drive];
set_capacity(disk, 880*2);

1
drivers/block/ataflop.c
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@ -1964,7 +1964,6 @@ static int __init atari_floppy_init (void)
unit[i].disk->first_minor = i;
sprintf(unit[i].disk->disk_name, "fd%d", i);
unit[i].disk->fops = &floppy_fops;
unit[i].disk->events = DISK_EVENT_MEDIA_CHANGE;
unit[i].disk->private_data = &unit[i];
unit[i].disk->queue = blk_init_queue(do_fd_request,
&ataflop_lock);

1
drivers/block/floppy.c
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@ -4205,7 +4205,6 @@ static int __init floppy_init(void)
disks[dr]->major = FLOPPY_MAJOR;
disks[dr]->first_minor = TOMINOR(dr);
disks[dr]->fops = &floppy_fops;
disks[dr]->events = DISK_EVENT_MEDIA_CHANGE;
sprintf(disks[dr]->disk_name, "fd%d", dr);
init_timer(&motor_off_timer[dr]);

1
drivers/block/paride/pcd.c
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@ -320,7 +320,6 @@ static void pcd_init_units(void)
disk->first_minor = unit;
strcpy(disk->disk_name, cd->name); /* umm... */
disk->fops = &pcd_bdops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
}
}

1
drivers/block/paride/pd.c
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@ -837,7 +837,6 @@ static void pd_probe_drive(struct pd_unit *disk)
p->fops = &pd_fops;
p->major = major;
p->first_minor = (disk - pd) << PD_BITS;
p->events = DISK_EVENT_MEDIA_CHANGE;
disk->gd = p;
p->private_data = disk;
p->queue = pd_queue;

1
drivers/block/paride/pf.c
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@ -294,7 +294,6 @@ static void __init pf_init_units(void)
disk->first_minor = unit;
strcpy(disk->disk_name, pf->name);
disk->fops = &pf_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
if (!(*drives[unit])[D_PRT])
pf_drive_count++;
}

1
drivers/block/swim.c
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@ -858,7 +858,6 @@ static int __devinit swim_floppy_init(struct swim_priv *swd)
swd->unit[drive].disk->first_minor = drive;
sprintf(swd->unit[drive].disk->disk_name, "fd%d", drive);
swd->unit[drive].disk->fops = &floppy_fops;
swd->unit[drive].disk->events = DISK_EVENT_MEDIA_CHANGE;
swd->unit[drive].disk->private_data = &swd->unit[drive];
swd->unit[drive].disk->queue = swd->queue;
set_capacity(swd->unit[drive].disk, 2880);

1
drivers/block/swim3.c
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@ -1163,7 +1163,6 @@ static int __devinit swim3_attach(struct macio_dev *mdev, const struct of_device
disk->major = FLOPPY_MAJOR;
disk->first_minor = i;
disk->fops = &floppy_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = &floppy_states[i];
disk->queue = swim3_queue;
disk->flags |= GENHD_FL_REMOVABLE;

1
drivers/block/ub.c
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@ -2334,7 +2334,6 @@ static int ub_probe_lun(struct ub_dev *sc, int lnum)
disk->major = UB_MAJOR;
disk->first_minor = lun->id * UB_PARTS_PER_LUN;
disk->fops = &ub_bd_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = lun;
disk->driverfs_dev = &sc->intf->dev;

1
drivers/block/xsysace.c
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@ -1005,7 +1005,6 @@ static int __devinit ace_setup(struct ace_device *ace)
ace->gd->major = ace_major;
ace->gd->first_minor = ace->id * ACE_NUM_MINORS;
ace->gd->fops = &ace_fops;
ace->gd->events = DISK_EVENT_MEDIA_CHANGE;
ace->gd->queue = ace->queue;
ace->gd->private_data = ace;
snprintf(ace->gd->disk_name, 32, "xs%c", ace->id + 'a');

1
drivers/cdrom/gdrom.c
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@ -803,7 +803,6 @@ static int __devinit probe_gdrom(struct platform_device *devptr)
goto probe_fail_cdrom_register;
}
gd.disk->fops = &gdrom_bdops;
gd.disk->events = DISK_EVENT_MEDIA_CHANGE;
/* latch on to the interrupt */
err = gdrom_set_interrupt_handlers();
if (err)

1
drivers/cdrom/viocd.c
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@ -626,7 +626,6 @@ static int viocd_probe(struct vio_dev *vdev, const struct vio_device_id *id)
gendisk->queue = q;
gendisk->fops = &viocd_fops;
gendisk->flags = GENHD_FL_CD|GENHD_FL_REMOVABLE;
gendisk->events = DISK_EVENT_MEDIA_CHANGE;
set_capacity(gendisk, 0);
gendisk->private_data = d;
d->viocd_disk = gendisk;

1
drivers/message/i2o/i2o_block.c
View File

@ -1000,7 +1000,6 @@ static struct i2o_block_device *i2o_block_device_alloc(void)
gd->major = I2O_MAJOR;
gd->queue = queue;
gd->fops = &i2o_block_fops;
gd->events = DISK_EVENT_MEDIA_CHANGE;
gd->private_data = dev;
dev->gd = gd;

1
drivers/s390/char/tape_block.c
View File

@ -236,7 +236,6 @@ tapeblock_setup_device(struct tape_device * device)
disk->major = tapeblock_major;
disk->first_minor = device->first_minor;
disk->fops = &tapeblock_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = tape_get_device(device);
disk->queue = blkdat->request_queue;
set_capacity(disk, 0);