/* * Ultra Wide Band * Driver initialization, etc * * Copyright (C) 2005-2006 Intel Corporation * Inaky Perez-Gonzalez * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. * * * FIXME: docs * * Life cycle: FIXME: explain * * UWB radio controller: * * 1. alloc a uwb_rc, zero it * 2. call uwb_rc_init() on it to set it up + ops (won't do any * kind of allocation) * 3. register (now it is owned by the UWB stack--deregister before * freeing/destroying). * 4. It lives on it's own now (UWB stack handles)--when it * disconnects, call unregister() * 5. free it. * * Make sure you have a reference to the uwb_rc before calling * any of the UWB API functions. * * TODO: * * 1. Locking and life cycle management is crappy still. All entry * points to the UWB HCD API assume you have a reference on the * uwb_rc structure and that it won't go away. They mutex lock it * before doing anything. */ #include #include #include #include #include #include #include #include "uwb-internal.h" /* UWB stack attributes (or 'global' constants) */ /** * If a beacon disappears for longer than this, then we consider the * device who was represented by that beacon to be gone. * * ECMA-368[17.2.3, last para] establishes that a device must not * consider a device to be its neighbour if he doesn't receive a beacon * for more than mMaxLostBeacons. mMaxLostBeacons is defined in * ECMA-368[17.16] as 3; because we can get only one beacon per * superframe, that'd be 3 * 65ms = 195 ~ 200 ms. Let's give it time * for jitter and stuff and make it 500 ms. */ unsigned long beacon_timeout_ms = 500; static ssize_t beacon_timeout_ms_show(struct class *class, struct class_attribute *attr, char *buf) { return scnprintf(buf, PAGE_SIZE, "%lu\n", beacon_timeout_ms); } static ssize_t beacon_timeout_ms_store(struct class *class, struct class_attribute *attr, const char *buf, size_t size) { unsigned long bt; ssize_t result; result = sscanf(buf, "%lu", &bt); if (result != 1) return -EINVAL; beacon_timeout_ms = bt; return size; } static struct class_attribute uwb_class_attrs[] = { __ATTR(beacon_timeout_ms, S_IWUSR | S_IRUGO, beacon_timeout_ms_show, beacon_timeout_ms_store), __ATTR_NULL, }; /** Device model classes */ struct class uwb_rc_class = { .name = "uwb_rc", .class_attrs = uwb_class_attrs, }; static int __init uwb_subsys_init(void) { int result = 0; result = uwb_est_create(); if (result < 0) { printk(KERN_ERR "uwb: Can't initialize EST subsystem\n"); goto error_est_init; } result = class_register(&uwb_rc_class); if (result < 0) goto error_uwb_rc_class_register; /* Register the UWB bus */ result = bus_register(&uwb_bus_type); if (result) { pr_err("%s - registering bus driver failed\n", __func__); goto exit_bus; } uwb_dbg_init(); return 0; exit_bus: class_unregister(&uwb_rc_class); error_uwb_rc_class_register: uwb_est_destroy(); error_est_init: return result; } module_init(uwb_subsys_init); static void __exit uwb_subsys_exit(void) { uwb_dbg_exit(); bus_unregister(&uwb_bus_type); class_unregister(&uwb_rc_class); uwb_est_destroy(); return; } module_exit(uwb_subsys_exit); MODULE_AUTHOR("Inaky Perez-Gonzalez "); MODULE_DESCRIPTION("Ultra Wide Band core"); MODULE_LICENSE("GPL"); table summary='commit info' class='commit-info'> authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2016-11-04 19:39:39 +0100 committerMichal Marek <mmarek@suse.com>2016-11-09 22:28:05 +0100 commit82031ea29e454b574bc6f49a33683a693ca5d907 (patch) tree1e29308232a326471658f6f17a34c045c6f9dce7 parent8ae94224c9d72fc4d9aaac93b2d7833cf46d7141 (diff)
scripts/has-stack-protector: add -fno-PIE
Adding -no-PIE to the fstack protector check. -no-PIE was introduced before -fstack-protector so there is no need for a runtime check. Without it the build stops: |Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong available but compiler is broken due to -mcmodel=kernel + -fPIE if -fPIE is enabled by default. Tagging it stable so it is possible to compile recent stable kernels as well. Cc: stable@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Michal Marek <mmarek@suse.com>
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