/* * Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ /* * Copyright (c) 2012 Intel Corporation. All rights reserved. */ #include "drm_linux.h" void kref_init(struct kref *kref) { atomic_set(&kref->refcount, 1); } void kref_get(struct kref *kref) { atomic_inc(&kref->refcount); } void kref_put(struct kref *kref, void (*release)(struct kref *kref)) { if (!atomic_dec_uint_nv(&kref->refcount)) release(kref); } unsigned int hweight16(unsigned int w) { w = (w & 0x5555) + ((w >> 1) & 0x5555); w = (w & 0x3333) + ((w >> 2) & 0x3333); w = (w & 0x0F0F) + ((w >> 4) & 0x0F0F); w = (w & 0x00FF) + ((w >> 8) & 0x00FF); return (w); } long IS_ERR(const void *ptr) { return ((unsigned long)ptr >= (unsigned long)-255); } #ifdef NEVER /* * kfree wrapper to Solaris VM. */ void kfree(void *buf, size_t size) { } #endif