mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-03-03 18:28:01 +01:00
bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/*
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* Copyright (C) 2017 Rafał Miłecki <rafal@milecki.pl>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/of.h>
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#include <net/cfg80211.h>
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#include "core.h"
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static bool wiphy_freq_limits_valid_chan(struct wiphy *wiphy,
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struct ieee80211_freq_range *freq_limits,
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unsigned int n_freq_limits,
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struct ieee80211_channel *chan)
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{
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u32 bw = MHZ_TO_KHZ(20);
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int i;
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for (i = 0; i < n_freq_limits; i++) {
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struct ieee80211_freq_range *limit = &freq_limits[i];
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if (cfg80211_does_bw_fit_range(limit,
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MHZ_TO_KHZ(chan->center_freq),
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bw))
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return true;
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}
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return false;
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}
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static void wiphy_freq_limits_apply(struct wiphy *wiphy,
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struct ieee80211_freq_range *freq_limits,
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unsigned int n_freq_limits)
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{
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enum nl80211_band band;
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int i;
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if (WARN_ON(!n_freq_limits))
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return;
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for (band = 0; band < NUM_NL80211_BANDS; band++) {
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struct ieee80211_supported_band *sband = wiphy->bands[band];
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if (!sband)
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continue;
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for (i = 0; i < sband->n_channels; i++) {
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struct ieee80211_channel *chan = &sband->channels[i];
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if (chan->flags & IEEE80211_CHAN_DISABLED)
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continue;
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if (!wiphy_freq_limits_valid_chan(wiphy, freq_limits,
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n_freq_limits,
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chan)) {
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pr_debug("Disabling freq %d MHz as it's out of OF limits\n",
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chan->center_freq);
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chan->flags |= IEEE80211_CHAN_DISABLED;
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}
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}
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}
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}
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void wiphy_read_of_freq_limits(struct wiphy *wiphy)
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{
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struct device *dev = wiphy_dev(wiphy);
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struct device_node *np;
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struct property *prop;
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struct ieee80211_freq_range *freq_limits;
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unsigned int n_freq_limits;
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const __be32 *p;
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int len, i;
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int err = 0;
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if (!dev)
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return;
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np = dev_of_node(dev);
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if (!np)
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return;
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prop = of_find_property(np, "ieee80211-freq-limit", &len);
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if (!prop)
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return;
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if (!len || len % sizeof(u32) || len / sizeof(u32) % 2) {
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dev_err(dev, "ieee80211-freq-limit wrong format");
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return;
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}
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n_freq_limits = len / sizeof(u32) / 2;
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freq_limits = kzalloc_objs(*freq_limits, n_freq_limits);
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if (!freq_limits) {
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err = -ENOMEM;
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goto out_kfree;
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}
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p = NULL;
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for (i = 0; i < n_freq_limits; i++) {
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struct ieee80211_freq_range *limit = &freq_limits[i];
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p = of_prop_next_u32(prop, p, &limit->start_freq_khz);
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if (!p) {
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err = -EINVAL;
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goto out_kfree;
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}
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p = of_prop_next_u32(prop, p, &limit->end_freq_khz);
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if (!p) {
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err = -EINVAL;
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goto out_kfree;
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}
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if (!limit->start_freq_khz ||
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!limit->end_freq_khz ||
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limit->start_freq_khz >= limit->end_freq_khz) {
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err = -EINVAL;
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goto out_kfree;
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}
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}
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wiphy_freq_limits_apply(wiphy, freq_limits, n_freq_limits);
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out_kfree:
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kfree(freq_limits);
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if (err)
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dev_err(dev, "Failed to get limits: %d\n", err);
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}
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EXPORT_SYMBOL(wiphy_read_of_freq_limits);
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