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struct bus_type should never be modified in a sysfs callback as there is nothing in the structure to modify, and frankly, the structure is almost never used in a sysfs callback, so mark it as constant to allow struct bus_type to be moved to read-only memory. Cc: "David S. Miller" <davem@davemloft.net> Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alexandre Bounine <alex.bou9@gmail.com> Cc: Alison Schofield <alison.schofield@intel.com> Cc: Ben Widawsky <bwidawsk@kernel.org> Cc: Dexuan Cui <decui@microsoft.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Harald Freudenberger <freude@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Hu Haowen <src.res@email.cn> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Stuart Yoder <stuyoder@gmail.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Yanteng Si <siyanteng@loongson.cn> Acked-by: Ilya Dryomov <idryomov@gmail.com> # rbd Acked-by: Ira Weiny <ira.weiny@intel.com> # cxl Reviewed-by: Alex Shi <alexs@kernel.org> Acked-by: Iwona Winiarska <iwona.winiarska@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> # pci Acked-by: Wei Liu <wei.liu@kernel.org> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> # scsi Link: https://lore.kernel.org/r/20230313182918.1312597-23-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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// Copyright (c) 2021 Intel Corporation
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/peci.h>
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#include "internal.h"
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static int rescan_controller(struct device *dev, void *data)
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{
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if (dev->type != &peci_controller_type)
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return 0;
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return peci_controller_scan_devices(to_peci_controller(dev));
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}
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static ssize_t rescan_store(const struct bus_type *bus, const char *buf, size_t count)
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{
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bool res;
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int ret;
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ret = kstrtobool(buf, &res);
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if (ret)
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return ret;
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if (!res)
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return count;
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ret = bus_for_each_dev(&peci_bus_type, NULL, NULL, rescan_controller);
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if (ret)
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return ret;
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return count;
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}
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static BUS_ATTR_WO(rescan);
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static struct attribute *peci_bus_attrs[] = {
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&bus_attr_rescan.attr,
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NULL
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};
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static const struct attribute_group peci_bus_group = {
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.attrs = peci_bus_attrs,
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};
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const struct attribute_group *peci_bus_groups[] = {
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&peci_bus_group,
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NULL
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};
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static ssize_t remove_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct peci_device *device = to_peci_device(dev);
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bool res;
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int ret;
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ret = kstrtobool(buf, &res);
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if (ret)
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return ret;
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if (res && device_remove_file_self(dev, attr))
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peci_device_destroy(device);
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return count;
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}
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static DEVICE_ATTR_IGNORE_LOCKDEP(remove, 0200, NULL, remove_store);
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static struct attribute *peci_device_attrs[] = {
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&dev_attr_remove.attr,
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NULL
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};
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static const struct attribute_group peci_device_group = {
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.attrs = peci_device_attrs,
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};
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const struct attribute_group *peci_device_groups[] = {
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&peci_device_group,
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NULL
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};
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