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scsi: need to reset unprep_rq_fn in sd_remove

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This is for block's for-2.6.36.

We need to reset q->unprep_rq_fn in sd_remove. Otherwise we hit kernel
oops if we access to a scsi disk device via sg after removing scsi
disk module.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
FUJITA Tomonori 2010-07-03 08:07:04 -06:00 committed by Jens Axboe
parent 00fff26539
commit 82b6d57fb1
1 changed files with 1 additions and 0 deletions
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drivers/scsi/sd.c
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@ -2384,6 +2384,7 @@ static int sd_remove(struct device *dev)
async_synchronize_full();
sdkp = dev_get_drvdata(dev);
blk_queue_prep_rq(sdkp->device->request_queue, scsi_prep_fn);
blk_queue_unprep_rq(sdkp->device->request_queue, NULL);
device_del(&sdkp->dev);
del_gendisk(sdkp->disk);
sd_shutdown(dev);