/* * VMware vSockets Driver * * Copyright (C) 2007-2012 VMware, 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 version 2 and no later version. * * This program is distributed in the hope that it will 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. */ #include #include #include #include #include void vsock_addr_init(struct sockaddr_vm *addr, u32 cid, u32 port) { memset(addr, 0, sizeof(*addr)); addr->svm_family = AF_VSOCK; addr->svm_cid = cid; addr->svm_port = port; } EXPORT_SYMBOL_GPL(vsock_addr_init); int vsock_addr_validate(const struct sockaddr_vm *addr) { if (!addr) return -EFAULT; if (addr->svm_family != AF_VSOCK) return -EAFNOSUPPORT; if (addr->svm_zero[0] != 0) return -EINVAL; return 0; } EXPORT_SYMBOL_GPL(vsock_addr_validate); bool vsock_addr_bound(const struct sockaddr_vm *addr) { return addr->svm_port != VMADDR_PORT_ANY; } EXPORT_SYMBOL_GPL(vsock_addr_bound); void vsock_addr_unbind(struct sockaddr_vm *addr) { vsock_addr_init(addr, VMADDR_CID_ANY, VMADDR_PORT_ANY); } EXPORT_SYMBOL_GPL(vsock_addr_unbind); bool vsock_addr_equals_addr(const struct sockaddr_vm *addr, const struct sockaddr_vm *other) { return addr->svm_cid == other->svm_cid && addr->svm_port == other->svm_port; } EXPORT_SYMBOL_GPL(vsock_addr_equals_addr); int vsock_addr_cast(const struct sockaddr *addr, size_t len, struct sockaddr_vm **out_addr) { if (len < sizeof(**out_addr)) return -EFAULT; *out_addr = (struct sockaddr_vm *)addr; return vsock_addr_validate(*out_addr); } EXPORT_SYMBOL_GPL(vsock_addr_cast); e-remove&id=e6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0'>treecommitdiff
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authorDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-12 17:15:56 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:32 +0100
commite6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0 (patch)
tree77cadb6d8aad1b52c34e4afa8c9deef603bbe2ed /sound/soc/mediatek/mt8173
parent4e5b54f127426c82dc2816340c26d951a5bb3429 (diff)
drm: Don't race connector registration
I was under the misconception that the sysfs dev stuff can be fully set up, and then registered all in one step with device_add. That's true for properties and property groups, but not for parents and child devices. Those must be fully registered before you can register a child. Add a bit of tracking to make sure that asynchronous mst connector hotplugging gets this right. For consistency we rely upon the implicit barriers of the connector->mutex, which is taken anyway, to ensure that at least either the connector or device registration call will work out. Mildly tested since I can't reliably reproduce this on my mst box here. Reported-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484237756-2720-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'sound/soc/mediatek/mt8173')