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Commit 4d695819 authored by Pete Zaitcev's avatar Pete Zaitcev Committed by Greg Kroah-Hartman
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[PATCH] USB: ub 01 remove first_open 



The first_open was long overdue for removal, but I wanted to keep this
separate for other changes in case of regressions.

Signed-off-by: default avatarPete Zaitcev <zaitcev@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent ae557175

drivers/block/ub.c

+0 −23
Original line number Diff line number Diff line
@@ -8,7 +8,6 @@ 
 * and is not licensed separately. See file COPYING for details.

 *

 * TODO (sorted by decreasing priority)

 *  -- Kill first_open (Al Viro fixed the block layer now)

 *  -- set readonly flag for CDs, set removable flag for CF readers

 *  -- do inquiry and verify we got a disk and not a tape (for LUN mismatch)

 *  -- special case some senses, e.g. 3a/0 -> no media present, reduce retries
@@ -334,7 +333,6 @@ struct ub_lun { 
	int changed;			/* Media was changed */

	int removable;

	int readonly;

	int first_open;			/* Kludge. See ub_bd_open. */



	struct ub_request urq;
@@ -1849,26 +1847,6 @@ static int ub_bd_open(struct inode *inode, struct file *filp) 
	sc->openc++;

	spin_unlock_irqrestore(&ub_lock, flags);



	/*

	 * This is a workaround for a specific problem in our block layer.

	 * In 2.6.9, register_disk duplicates the code from rescan_partitions.

	 * However, if we do add_disk with a device which persistently reports

	 * a changed media, add_disk calls register_disk, which does do_open,

	 * which will call rescan_paritions for changed media. After that,

	 * register_disk attempts to do it all again and causes double kobject

	 * registration and a eventually an oops on module removal.

	 *

	 * The bottom line is, Al Viro says that we should not allow

	 * bdev->bd_invalidated to be set when doing add_disk no matter what.

	 */

	if (lun->first_open) {

		lun->first_open = 0;

		if (lun->changed) {

			rc = -ENOMEDIUM;

			goto err_open;

		}

	}



	if (lun->removable || lun->readonly)

		check_disk_change(inode->i_bdev);
@@ -2537,7 +2515,6 @@ static int ub_probe_lun(struct ub_dev *sc, int lnum) 


	lun->removable = 1;		/* XXX Query this from the device */

	lun->changed = 1;		/* ub_revalidate clears only */

	lun->first_open = 1;

	ub_revalidate(sc, lun);



	rc = -ENOMEM;