forked from mirrors/linux
b2d2325661
Since commit 43a7206b09 ("driver core: class: make class_register() take
a const *"), the driver core allows for struct class to be in read-only
memory, so move the wpan_phy_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Message-ID: <20240305-class_cleanup-wpan-v1-1-376f751fd481@marliere.net>
[changed prefix from wifi to ieee802154 by stefan@datenfreihafen.org]
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
111 lines
2.2 KiB
C
111 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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*
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* Authors:
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* Alexander Aring <aar@pengutronix.de>
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*
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* Based on: net/wireless/sysfs.c
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*/
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#include <linux/device.h>
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#include <linux/rtnetlink.h>
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#include <net/cfg802154.h>
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#include "core.h"
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#include "sysfs.h"
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#include "rdev-ops.h"
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static inline struct cfg802154_registered_device *
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dev_to_rdev(struct device *dev)
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{
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return container_of(dev, struct cfg802154_registered_device,
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wpan_phy.dev);
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}
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#define SHOW_FMT(name, fmt, member) \
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static ssize_t name ## _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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return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \
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} \
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static DEVICE_ATTR_RO(name)
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SHOW_FMT(index, "%d", wpan_phy_idx);
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static ssize_t name_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 wpan_phy *wpan_phy = &dev_to_rdev(dev)->wpan_phy;
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return sprintf(buf, "%s\n", dev_name(&wpan_phy->dev));
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}
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static DEVICE_ATTR_RO(name);
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static void wpan_phy_release(struct device *dev)
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{
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struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
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cfg802154_dev_free(rdev);
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}
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static struct attribute *pmib_attrs[] = {
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&dev_attr_index.attr,
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&dev_attr_name.attr,
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NULL,
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};
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ATTRIBUTE_GROUPS(pmib);
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#ifdef CONFIG_PM_SLEEP
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static int wpan_phy_suspend(struct device *dev)
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{
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struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
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int ret = 0;
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if (rdev->ops->suspend) {
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rtnl_lock();
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ret = rdev_suspend(rdev);
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rtnl_unlock();
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}
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return ret;
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}
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static int wpan_phy_resume(struct device *dev)
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{
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struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
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int ret = 0;
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if (rdev->ops->resume) {
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rtnl_lock();
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ret = rdev_resume(rdev);
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rtnl_unlock();
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}
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return ret;
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}
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static SIMPLE_DEV_PM_OPS(wpan_phy_pm_ops, wpan_phy_suspend, wpan_phy_resume);
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#define WPAN_PHY_PM_OPS (&wpan_phy_pm_ops)
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#else
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#define WPAN_PHY_PM_OPS NULL
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#endif
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const struct class wpan_phy_class = {
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.name = "ieee802154",
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.dev_release = wpan_phy_release,
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.dev_groups = pmib_groups,
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.pm = WPAN_PHY_PM_OPS,
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};
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int wpan_phy_sysfs_init(void)
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{
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return class_register(&wpan_phy_class);
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}
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void wpan_phy_sysfs_exit(void)
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{
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class_unregister(&wpan_phy_class);
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}
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