linux-stable/net/atm/atm_sysfs.c
Greg Kroah-Hartman 23680f0b7d driver core: make struct class.dev_uevent() take a const *
The dev_uevent() in struct class should not be modifying the device that
is passed into it, so mark it as a const * and propagate the function
signature changes out into all relevant subsystems that use this
callback.

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Russ Weight <russell.h.weight@intel.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Keith Busch <kbusch@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Raed Salem <raeds@nvidia.com>
Cc: Chen Zhongjin <chenzhongjin@huawei.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Avihai Horon <avihaih@nvidia.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Jakob Koschel <jakobkoschel@gmail.com>
Cc: Antoine Tenart <atenart@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Wang Yufen <wangyufen@huawei.com>
Cc: linux-block@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: linux-pm@vger.kernel.org
Cc: linux-rdma@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20221123122523.1332370-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-24 17:12:15 +01:00

185 lines
3.9 KiB
C

// SPDX-License-Identifier: GPL-2.0
/* ATM driver model support. */
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/kobject.h>
#include <linux/atmdev.h>
#include "common.h"
#include "resources.h"
#define to_atm_dev(cldev) container_of(cldev, struct atm_dev, class_dev)
static ssize_t type_show(struct device *cdev,
struct device_attribute *attr, char *buf)
{
struct atm_dev *adev = to_atm_dev(cdev);
return scnprintf(buf, PAGE_SIZE, "%s\n", adev->type);
}
static ssize_t address_show(struct device *cdev,
struct device_attribute *attr, char *buf)
{
struct atm_dev *adev = to_atm_dev(cdev);
return scnprintf(buf, PAGE_SIZE, "%pM\n", adev->esi);
}
static ssize_t atmaddress_show(struct device *cdev,
struct device_attribute *attr, char *buf)
{
unsigned long flags;
struct atm_dev *adev = to_atm_dev(cdev);
struct atm_dev_addr *aaddr;
int count = 0;
spin_lock_irqsave(&adev->lock, flags);
list_for_each_entry(aaddr, &adev->local, entry) {
count += scnprintf(buf + count, PAGE_SIZE - count,
"%1phN.%2phN.%10phN.%6phN.%1phN\n",
&aaddr->addr.sas_addr.prv[0],
&aaddr->addr.sas_addr.prv[1],
&aaddr->addr.sas_addr.prv[3],
&aaddr->addr.sas_addr.prv[13],
&aaddr->addr.sas_addr.prv[19]);
}
spin_unlock_irqrestore(&adev->lock, flags);
return count;
}
static ssize_t atmindex_show(struct device *cdev,
struct device_attribute *attr, char *buf)
{
struct atm_dev *adev = to_atm_dev(cdev);
return scnprintf(buf, PAGE_SIZE, "%d\n", adev->number);
}
static ssize_t carrier_show(struct device *cdev,
struct device_attribute *attr, char *buf)
{
struct atm_dev *adev = to_atm_dev(cdev);
return scnprintf(buf, PAGE_SIZE, "%d\n",
adev->signal == ATM_PHY_SIG_LOST ? 0 : 1);
}
static ssize_t link_rate_show(struct device *cdev,
struct device_attribute *attr, char *buf)
{
struct atm_dev *adev = to_atm_dev(cdev);
int link_rate;
/* show the link rate, not the data rate */
switch (adev->link_rate) {
case ATM_OC3_PCR:
link_rate = 155520000;
break;
case ATM_OC12_PCR:
link_rate = 622080000;
break;
case ATM_25_PCR:
link_rate = 25600000;
break;
default:
link_rate = adev->link_rate * 8 * 53;
}
return scnprintf(buf, PAGE_SIZE, "%d\n", link_rate);
}
static DEVICE_ATTR_RO(address);
static DEVICE_ATTR_RO(atmaddress);
static DEVICE_ATTR_RO(atmindex);
static DEVICE_ATTR_RO(carrier);
static DEVICE_ATTR_RO(type);
static DEVICE_ATTR_RO(link_rate);
static struct device_attribute *atm_attrs[] = {
&dev_attr_atmaddress,
&dev_attr_address,
&dev_attr_atmindex,
&dev_attr_carrier,
&dev_attr_type,
&dev_attr_link_rate,
NULL
};
static int atm_uevent(const struct device *cdev, struct kobj_uevent_env *env)
{
const struct atm_dev *adev;
if (!cdev)
return -ENODEV;
adev = to_atm_dev(cdev);
if (!adev)
return -ENODEV;
if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number))
return -ENOMEM;
return 0;
}
static void atm_release(struct device *cdev)
{
struct atm_dev *adev = to_atm_dev(cdev);
kfree(adev);
}
static struct class atm_class = {
.name = "atm",
.dev_release = atm_release,
.dev_uevent = atm_uevent,
};
int atm_register_sysfs(struct atm_dev *adev, struct device *parent)
{
struct device *cdev = &adev->class_dev;
int i, j, err;
cdev->class = &atm_class;
cdev->parent = parent;
dev_set_drvdata(cdev, adev);
dev_set_name(cdev, "%s%d", adev->type, adev->number);
err = device_register(cdev);
if (err < 0)
return err;
for (i = 0; atm_attrs[i]; i++) {
err = device_create_file(cdev, atm_attrs[i]);
if (err)
goto err_out;
}
return 0;
err_out:
for (j = 0; j < i; j++)
device_remove_file(cdev, atm_attrs[j]);
device_del(cdev);
return err;
}
void atm_unregister_sysfs(struct atm_dev *adev)
{
struct device *cdev = &adev->class_dev;
device_del(cdev);
}
int __init atm_sysfs_init(void)
{
return class_register(&atm_class);
}
void __exit atm_sysfs_exit(void)
{
class_unregister(&atm_class);
}