ca47d34458
Based on 1 normalized pattern(s): 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 either version 2 of the license or at your option any 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 you should have received a copy of the gnu general public license along with this program see the file copying if not write to the free software foundation inc 51 franklin steet fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 41 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154042.524645346@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
142 lines
2.7 KiB
C
142 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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Broadcom B43 wireless driver
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SYSFS support routines
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Copyright (c) 2006 Michael Buesch <m@bues.ch>
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*/
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#include <linux/capability.h>
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#include <linux/io.h>
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#include "b43.h"
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#include "sysfs.h"
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#include "main.h"
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#include "phy_common.h"
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#define GENERIC_FILESIZE 64
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static int get_integer(const char *buf, size_t count)
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{
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char tmp[10 + 1] = { 0 };
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int ret = -EINVAL;
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if (count == 0)
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goto out;
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count = min_t(size_t, count, 10);
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memcpy(tmp, buf, count);
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ret = simple_strtol(tmp, NULL, 10);
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out:
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return ret;
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}
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static ssize_t b43_attr_interfmode_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct b43_wldev *wldev = dev_to_b43_wldev(dev);
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ssize_t count = 0;
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if (!capable(CAP_NET_ADMIN))
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return -EPERM;
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mutex_lock(&wldev->wl->mutex);
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if (wldev->phy.type != B43_PHYTYPE_G) {
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mutex_unlock(&wldev->wl->mutex);
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return -ENOSYS;
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}
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switch (wldev->phy.g->interfmode) {
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case B43_INTERFMODE_NONE:
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count =
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snprintf(buf, PAGE_SIZE,
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"0 (No Interference Mitigation)\n");
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break;
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case B43_INTERFMODE_NONWLAN:
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count =
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snprintf(buf, PAGE_SIZE,
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"1 (Non-WLAN Interference Mitigation)\n");
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break;
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case B43_INTERFMODE_MANUALWLAN:
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count =
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snprintf(buf, PAGE_SIZE,
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"2 (WLAN Interference Mitigation)\n");
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break;
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default:
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B43_WARN_ON(1);
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}
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mutex_unlock(&wldev->wl->mutex);
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return count;
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}
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static ssize_t b43_attr_interfmode_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct b43_wldev *wldev = dev_to_b43_wldev(dev);
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int err;
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int mode;
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if (!capable(CAP_NET_ADMIN))
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return -EPERM;
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mode = get_integer(buf, count);
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switch (mode) {
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case 0:
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mode = B43_INTERFMODE_NONE;
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break;
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case 1:
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mode = B43_INTERFMODE_NONWLAN;
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break;
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case 2:
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mode = B43_INTERFMODE_MANUALWLAN;
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break;
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case 3:
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mode = B43_INTERFMODE_AUTOWLAN;
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break;
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default:
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return -EINVAL;
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}
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mutex_lock(&wldev->wl->mutex);
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if (wldev->phy.ops->interf_mitigation) {
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err = wldev->phy.ops->interf_mitigation(wldev, mode);
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if (err) {
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b43err(wldev->wl, "Interference Mitigation not "
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"supported by device\n");
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}
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} else
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err = -ENOSYS;
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mutex_unlock(&wldev->wl->mutex);
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return err ? err : count;
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}
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static DEVICE_ATTR(interference, 0644,
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b43_attr_interfmode_show, b43_attr_interfmode_store);
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int b43_sysfs_register(struct b43_wldev *wldev)
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{
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struct device *dev = wldev->dev->dev;
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B43_WARN_ON(b43_status(wldev) != B43_STAT_INITIALIZED);
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return device_create_file(dev, &dev_attr_interference);
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}
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void b43_sysfs_unregister(struct b43_wldev *wldev)
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{
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struct device *dev = wldev->dev->dev;
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device_remove_file(dev, &dev_attr_interference);
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}
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