/* * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_ITABLE_H__ #define __XFS_ITABLE_H__ /* * xfs_bulkstat() is used to fill in xfs_bstat structures as well as dm_stat * structures (by the dmi library). This is a pointer to a formatter function * that will iget the inode and fill in the appropriate structure. * see xfs_bulkstat_one() and xfs_dm_bulkstat_one() in dmapi_xfs.c */ typedef int (*bulkstat_one_pf)(struct xfs_mount *mp, xfs_ino_t ino, void __user *buffer, int ubsize, int *ubused, int *stat); /* * Values for stat return value. */ #define BULKSTAT_RV_NOTHING 0 #define BULKSTAT_RV_DIDONE 1 #define BULKSTAT_RV_GIVEUP 2 /* * Return stat information in bulk (by-inode) for the filesystem. */ int /* error status */ xfs_bulkstat( xfs_mount_t *mp, /* mount point for filesystem */ xfs_ino_t *lastino, /* last inode returned */ int *count, /* size of buffer/count returned */ bulkstat_one_pf formatter, /* func that'd fill a single buf */ size_t statstruct_size,/* sizeof struct that we're filling */ char __user *ubuffer,/* buffer with inode stats */ int *done); /* 1 if there are more stats to get */ typedef int (*bulkstat_one_fmt_pf)( /* used size in bytes or negative error */ void __user *ubuffer, /* buffer to write to */ int ubsize, /* remaining user buffer sz */ int *ubused, /* bytes used by formatter */ const xfs_bstat_t *buffer); /* buffer to read from */ int xfs_bulkstat_one_int( xfs_mount_t *mp, xfs_ino_t ino, void __user *buffer, int ubsize, bulkstat_one_fmt_pf formatter, int *ubused, int *stat); int xfs_bulkstat_one( xfs_mount_t *mp, xfs_ino_t ino, void __user *buffer, int ubsize, int *ubused, int *stat); typedef int (*inumbers_fmt_pf)( void __user *ubuffer, /* buffer to write to */ const xfs_inogrp_t *buffer, /* buffer to read from */ long count, /* # of elements to read */ long *written); /* # of bytes written */ int xfs_inumbers_fmt( void __user *ubuffer, /* buffer to write to */ const xfs_inogrp_t *buffer, /* buffer to read from */ long count, /* # of elements to read */ long *written); /* # of bytes written */ int /* error status */ xfs_inumbers( xfs_mount_t *mp, /* mount point for filesystem */ xfs_ino_t *last, /* last inode returned */ int *count, /* size of buffer/count returned */ void __user *buffer, /* buffer with inode info */ inumbers_fmt_pf formatter); #endif /* __XFS_ITABLE_H__ */ a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/gadget/udc?id=4e5b54f127426c82dc2816340c26d951a5bb3429'>udc/bdc/bdc_cmd.c
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authorDaniel Vetter <daniel.vetter@ffwll.ch>2016-12-18 14:35:45 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:17 +0100
commit4e5b54f127426c82dc2816340c26d951a5bb3429 (patch)
treecc3a8f7e335cf12880bc8d1a1e2066f6cfe0a68e /drivers/usb/gadget/udc/bdc/bdc_cmd.c
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
drm: prevent double-(un)registration for connectors
If we're unlucky then the registration from a hotplugged connector might race with the final registration step on driver load. And since MST topology discover is asynchronous that's even somewhat likely. v2: Also update the kerneldoc for @registered! v3: Review from Chris: - Improve kerneldoc for late_register/early_unregister callbacks. - Use mutex_destroy. Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Sean Paul <seanpaul@chromium.org> Reported-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161218133545.2106-1-daniel.vetter@ffwll.ch (cherry picked from commit e73ab00e9a0f1731f34d0620a9c55f5c30c4ad4e)
Diffstat (limited to 'drivers/usb/gadget/udc/bdc/bdc_cmd.c')