linux.git/drivers/infiniband/core/device.c, branch v6.7 Linux kernel source tree RDMA/core: Add support to dump SRQ resource in RAW format 2023-09-20T07:50:54+00:00 wenglianfa wenglianfa@huawei.com 2023-09-18T13:11:09+00:00 aebf8145e11a29a77dac15ee041a190676fac05f Add support to dump SRQ resource in raw format. It enable drivers to return the entire device specific SRQ context without setting each field separately. Example: $ rdma res show srq -r dev hns3 149000... $ rdma res show srq -j -r [{"ifindex":0,"ifname":"hns3","data":[149,0,0,...]}] Signed-off-by: wenglianfa <wenglianfa@huawei.com> Link: https://lore.kernel.org/r/20230918131110.3987498-3-huangjunxian6@hisilicon.com Signed-off-by: Leon Romanovsky <leon@kernel.org> 
Add support to dump SRQ resource in raw format. It enable drivers to
return the entire device specific SRQ context without setting each
field separately.

Example:
$ rdma res show srq -r
dev hns3 149000...

$ rdma res show srq -j -r
[{"ifindex":0,"ifname":"hns3","data":[149,0,0,...]}]

Signed-off-by: wenglianfa <wenglianfa@huawei.com>
Link: https://lore.kernel.org/r/20230918131110.3987498-3-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
RDMA/core: Add dedicated SRQ resource tracker function 2023-09-20T07:50:54+00:00 wenglianfa wenglianfa@huawei.com 2023-09-18T13:11:08+00:00 0e32d7d43b0b2d870b45cf4dff8188203800aa91 Add a dedicated callback function for SRQ resource tracker. Signed-off-by: wenglianfa <wenglianfa@huawei.com> Link: https://lore.kernel.org/r/20230918131110.3987498-2-huangjunxian6@hisilicon.com Signed-off-by: Leon Romanovsky <leon@kernel.org> 
Add a dedicated callback function for SRQ resource tracker.

Signed-off-by: wenglianfa <wenglianfa@huawei.com>
Link: https://lore.kernel.org/r/20230918131110.3987498-2-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
RDMA/core: Use size_{add,sub,mul}() in calls to struct_size() 2023-09-19T07:33:45+00:00 Gustavo A. R. Silva gustavoars@kernel.org 2023-09-17T21:21:36+00:00 81760bedc65194ff38e1e4faefd5f9f0c95c19a4 If, for any reason, the open-coded arithmetic causes a wraparound, the protection that `struct_size()` provides against potential integer overflows is defeated. Fix this by hardening calls to `struct_size()` with `size_add()`, `size_sub()` and `size_mul()`. Fixes: 467f432a521a ("RDMA/core: Split port and device counter sysfs attributes") Fixes: a4676388e2e2 ("RDMA/core: Simplify how the gid_attrs sysfs is created") Fixes: e9dd5daf884c ("IB/umad: Refactor code to use cdev_device_add()") Fixes: 324e227ea7c9 ("RDMA/device: Add ib_device_get_by_netdev()") Fixes: 5aad26a7eac5 ("IB/core: Use struct_size() in kzalloc()") Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/ZQdt4NsJFwwOYxUR@work Signed-off-by: Leon Romanovsky <leon@kernel.org> 
If, for any reason, the open-coded arithmetic causes a wraparound,
the protection that `struct_size()` provides against potential integer
overflows is defeated. Fix this by hardening calls to `struct_size()`
with `size_add()`, `size_sub()` and `size_mul()`.

Fixes: 467f432a521a ("RDMA/core: Split port and device counter sysfs attributes")
Fixes: a4676388e2e2 ("RDMA/core: Simplify how the gid_attrs sysfs is created")
Fixes: e9dd5daf884c ("IB/umad: Refactor code to use cdev_device_add()")
Fixes: 324e227ea7c9 ("RDMA/device: Add ib_device_get_by_netdev()")
Fixes: 5aad26a7eac5 ("IB/core: Use struct_size() in kzalloc()")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/ZQdt4NsJFwwOYxUR@work
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Merge tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core 2022-12-16T11:54:54+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-12-16T11:54:54+00:00 71a7507afbc3f27c346898f13ab9bfd918613c34 Pull driver core updates from Greg KH: "Here is the set of driver core and kernfs changes for 6.2-rc1. The "big" change in here is the addition of a new macro, container_of_const() that will preserve the "const-ness" of a pointer passed into it. The "problem" of the current container_of() macro is that if you pass in a "const *", out of it can comes a non-const pointer unless you specifically ask for it. For many usages, we want to preserve the "const" attribute by using the same call. For a specific example, this series changes the kobj_to_dev() macro to use it, allowing it to be used no matter what the const value is. This prevents every subsystem from having to declare 2 different individual macros (i.e. kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce the const value at build time, which having 2 macros would not do either. The driver for all of this have been discussions with the Rust kernel developers as to how to properly mark driver core, and kobject, objects as being "non-mutable". The changes to the kobject and driver core in this pull request are the result of that, as there are lots of paths where kobjects and device pointers are not modified at all, so marking them as "const" allows the compiler to enforce this. So, a nice side affect of the Rust development effort has been already to clean up the driver core code to be more obvious about object rules. All of this has been bike-shedded in quite a lot of detail on lkml with different names and implementations resulting in the tiny version we have in here, much better than my original proposal. Lots of subsystem maintainers have acked the changes as well. Other than this change, included in here are smaller stuff like: - kernfs fixes and updates to handle lock contention better - vmlinux.lds.h fixes and updates - sysfs and debugfs documentation updates - device property updates All of these have been in the linux-next tree for quite a while with no problems" * tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (58 commits) device property: Fix documentation for fwnode_get_next_parent() firmware_loader: fix up to_fw_sysfs() to preserve const usb.h: take advantage of container_of_const() device.h: move kobj_to_dev() to use container_of_const() container_of: add container_of_const() that preserves const-ness of the pointer driver core: fix up missed drivers/s390/char/hmcdrv_dev.c class.devnode() conversion. driver core: fix up missed scsi/cxlflash class.devnode() conversion. driver core: fix up some missing class.devnode() conversions. driver core: make struct class.devnode() take a const * driver core: make struct class.dev_uevent() take a const * cacheinfo: Remove of_node_put() for fw_token device property: Add a blank line in Kconfig of tests device property: Rename goto label to be more precise device property: Move PROPERTY_ENTRY_BOOL() a bit down device property: Get rid of __PROPERTY_ENTRY_ARRAY_EL*SIZE*() kernfs: fix all kernel-doc warnings and multiple typos driver core: pass a const * into of_device_uevent() kobject: kset_uevent_ops: make name() callback take a const * kobject: kset_uevent_ops: make filter() callback take a const * kobject: make kobject_namespace take a const * ... 
Pull driver core updates from Greg KH:
 "Here is the set of driver core and kernfs changes for 6.2-rc1.

  The "big" change in here is the addition of a new macro,
  container_of_const() that will preserve the "const-ness" of a pointer
  passed into it.

  The "problem" of the current container_of() macro is that if you pass
  in a "const *", out of it can comes a non-const pointer unless you
  specifically ask for it. For many usages, we want to preserve the
  "const" attribute by using the same call. For a specific example, this
  series changes the kobj_to_dev() macro to use it, allowing it to be
  used no matter what the const value is. This prevents every subsystem
  from having to declare 2 different individual macros (i.e.
  kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce
  the const value at build time, which having 2 macros would not do
  either.

  The driver for all of this have been discussions with the Rust kernel
  developers as to how to properly mark driver core, and kobject,
  objects as being "non-mutable". The changes to the kobject and driver
  core in this pull request are the result of that, as there are lots of
  paths where kobjects and device pointers are not modified at all, so
  marking them as "const" allows the compiler to enforce this.

  So, a nice side affect of the Rust development effort has been already
  to clean up the driver core code to be more obvious about object
  rules.

  All of this has been bike-shedded in quite a lot of detail on lkml
  with different names and implementations resulting in the tiny version
  we have in here, much better than my original proposal. Lots of
  subsystem maintainers have acked the changes as well.

  Other than this change, included in here are smaller stuff like:

   - kernfs fixes and updates to handle lock contention better

   - vmlinux.lds.h fixes and updates

   - sysfs and debugfs documentation updates

   - device property updates

  All of these have been in the linux-next tree for quite a while with
  no problems"

* tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (58 commits)
  device property: Fix documentation for fwnode_get_next_parent()
  firmware_loader: fix up to_fw_sysfs() to preserve const
  usb.h: take advantage of container_of_const()
  device.h: move kobj_to_dev() to use container_of_const()
  container_of: add container_of_const() that preserves const-ness of the pointer
  driver core: fix up missed drivers/s390/char/hmcdrv_dev.c class.devnode() conversion.
  driver core: fix up missed scsi/cxlflash class.devnode() conversion.
  driver core: fix up some missing class.devnode() conversions.
  driver core: make struct class.devnode() take a const *
  driver core: make struct class.dev_uevent() take a const *
  cacheinfo: Remove of_node_put() for fw_token
  device property: Add a blank line in Kconfig of tests
  device property: Rename goto label to be more precise
  device property: Move PROPERTY_ENTRY_BOOL() a bit down
  device property: Get rid of __PROPERTY_ENTRY_ARRAY_EL*SIZE*()
  kernfs: fix all kernel-doc warnings and multiple typos
  driver core: pass a const * into of_device_uevent()
  kobject: kset_uevent_ops: make name() callback take a const *
  kobject: kset_uevent_ops: make filter() callback take a const *
  kobject: make kobject_namespace take a const *
  ...
RDMA: Add missed netdev_put() for the netdevice_tracker 2022-12-11T08:11:10+00:00 Jason Gunthorpe jgg@nvidia.com 2022-12-09T14:21:56+00:00 e42f9c2e6aad583986e91979bf2fce47aaced1c2 The netdev core will detect if any untracked puts are done on tracked pointers and throw refcount warnings: refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 1 PID: 33 at lib/refcount.c:31 refcount_warn_saturate+0x1d7/0x1f0 lib/refcount.c:31 Modules linked in: CPU: 1 PID: 33 Comm: kworker/u4:2 Not tainted 6.1.0-rc8-next-20221207-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: ib-unreg-wq ib_unregister_work RIP: 0010:refcount_warn_saturate+0x1d7/0x1f0 lib/refcount.c:31 Code: 05 5a 60 51 0a 01 e8 35 0a b5 05 0f 0b e9 d3 fe ff ff e8 6c 9b 75 fd 48 c7 c7 c0 6d a6 8a c6 05 37 60 51 0a 01 e8 16 0a b5 05 <0f> 0b e9 b4 fe +ff ff 48 89 ef e8 5a b5 c3 fd e9 5c fe ff ff 0f 1f RSP: 0018:ffffc90000aa7b30 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880172f9d40 RSI: ffffffff8166b1dc RDI: fffff52000154f58 RBP: ffff88807906c600 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000000 R12: 1ffff92000154f6b R13: 0000000000000000 R14: ffff88807906c600 R15: ffff888046894000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe350a8ff8 CR3: 000000007a9e7000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __refcount_dec include/linux/refcount.h:344 [inline] refcount_dec include/linux/refcount.h:359 [inline] ref_tracker_free+0x539/0x6b0 lib/ref_tracker.c:118 netdev_tracker_free include/linux/netdevice.h:4039 [inline] netdev_put include/linux/netdevice.h:4056 [inline] dev_put include/linux/netdevice.h:4082 [inline] free_netdevs+0x1f8/0x470 drivers/infiniband/core/device.c:2204 __ib_unregister_device+0xa0/0x1a0 drivers/infiniband/core/device.c:1478 ib_unregister_work+0x19/0x30 drivers/infiniband/core/device.c:1586 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 So change the missed dev_put for pdata->netdev to also follow the tracker. Fixes: 09f530f0c6d6 ("RDMA: Add netdevice_tracker to ib_device_set_netdev()") Reported-by: syzbot+3fd8326d9a0812d19218@syzkaller.appspotmail.com Reported-by: syzbot+a1ed8ffe3121380cd5dd@syzkaller.appspotmail.com Reported-by: syzbot+8d0a099c8a6d1e4e601c@syzkaller.appspotmail.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/0-v1-e99919867b8d+1e2-netdev_tracker2_jgg@nvidia.com Signed-off-by: Leon Romanovsky <leon@kernel.org> 
The netdev core will detect if any untracked puts are done on tracked
pointers and throw refcount warnings:

  refcount_t: decrement hit 0; leaking memory.
  WARNING: CPU: 1 PID: 33 at lib/refcount.c:31 refcount_warn_saturate+0x1d7/0x1f0 lib/refcount.c:31
  Modules linked in:
  CPU: 1 PID: 33 Comm: kworker/u4:2 Not tainted 6.1.0-rc8-next-20221207-syzkaller #0
  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
  Workqueue: ib-unreg-wq ib_unregister_work
  RIP: 0010:refcount_warn_saturate+0x1d7/0x1f0 lib/refcount.c:31
  Code: 05 5a 60 51 0a 01 e8 35 0a b5 05 0f 0b e9 d3 fe ff ff e8 6c 9b 75 fd 48 c7 c7 c0 6d a6 8a c6 05 37 60 51 0a 01 e8 16 0a b5 05 <0f> 0b e9 b4 fe
  +ff ff 48 89 ef e8 5a b5 c3 fd e9 5c fe ff ff 0f 1f
  RSP: 0018:ffffc90000aa7b30 EFLAGS: 00010082
  RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
  RDX: ffff8880172f9d40 RSI: ffffffff8166b1dc RDI: fffff52000154f58
  RBP: ffff88807906c600 R08: 0000000000000005 R09: 0000000000000000
  R10: 0000000080000001 R11: 0000000000000000 R12: 1ffff92000154f6b
  R13: 0000000000000000 R14: ffff88807906c600 R15: ffff888046894000
  FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00007ffe350a8ff8 CR3: 000000007a9e7000 CR4: 00000000003526e0
  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  Call Trace:
   <TASK>
   __refcount_dec include/linux/refcount.h:344 [inline]
   refcount_dec include/linux/refcount.h:359 [inline]
   ref_tracker_free+0x539/0x6b0 lib/ref_tracker.c:118
   netdev_tracker_free include/linux/netdevice.h:4039 [inline]
   netdev_put include/linux/netdevice.h:4056 [inline]
   dev_put include/linux/netdevice.h:4082 [inline]
   free_netdevs+0x1f8/0x470 drivers/infiniband/core/device.c:2204
   __ib_unregister_device+0xa0/0x1a0 drivers/infiniband/core/device.c:1478
   ib_unregister_work+0x19/0x30 drivers/infiniband/core/device.c:1586
   process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
   worker_thread+0x669/0x1090 kernel/workqueue.c:2436
   kthread+0x2e8/0x3a0 kernel/kthread.c:376
   ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

So change the missed dev_put for pdata->netdev to also follow the tracker.

Fixes: 09f530f0c6d6 ("RDMA: Add netdevice_tracker to ib_device_set_netdev()")
Reported-by: syzbot+3fd8326d9a0812d19218@syzkaller.appspotmail.com
Reported-by: syzbot+a1ed8ffe3121380cd5dd@syzkaller.appspotmail.com
Reported-by: syzbot+8d0a099c8a6d1e4e601c@syzkaller.appspotmail.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/0-v1-e99919867b8d+1e2-netdev_tracker2_jgg@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Merge tag 'v6.1-rc8' into rdma.git for-next 2022-12-09T19:52:17+00:00 Jason Gunthorpe jgg@nvidia.com 2022-12-09T19:52:17+00:00 d69e8c63fcbbf695ff7ff2c6d26efead23cfbb3a For dependencies in following patches Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> 
For dependencies in following patches

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
RDMA: Add netdevice_tracker to ib_device_set_netdev() 2022-11-28T09:58:19+00:00 Jason Gunthorpe jgg@nvidia.com 2022-11-24T00:27:14+00:00 09f530f0c6d6689eee5e690c6d98f495fcc3a0f9 This will cause an informative backtrace to print if the user of ib_device_set_netdev() isn't careful about tearing down the ibdevice before its the netdevice parent is destroyed. Such as like this: unregister_netdevice: waiting for vlan0 to become free. Usage count = 2 leaked reference. ib_device_set_netdev+0x266/0x730 siw_newlink+0x4e0/0xfd0 nldev_newlink+0x35c/0x5c0 rdma_nl_rcv_msg+0x36d/0x690 rdma_nl_rcv+0x2ee/0x430 netlink_unicast+0x543/0x7f0 netlink_sendmsg+0x918/0xe20 sock_sendmsg+0xcf/0x120 ____sys_sendmsg+0x70d/0x8b0 ___sys_sendmsg+0x11d/0x1b0 __sys_sendmsg+0xfa/0x1d0 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd This will help debug the issues syzkaller is seeing. Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/0-v1-a7c81b3842ce+e5-netdev_tracker_jgg@nvidia.com Signed-off-by: Leon Romanovsky <leon@kernel.org> 
This will cause an informative backtrace to print if the user of
ib_device_set_netdev() isn't careful about tearing down the ibdevice
before its the netdevice parent is destroyed. Such as like this:

  unregister_netdevice: waiting for vlan0 to become free. Usage count = 2
  leaked reference.
   ib_device_set_netdev+0x266/0x730
   siw_newlink+0x4e0/0xfd0
   nldev_newlink+0x35c/0x5c0
   rdma_nl_rcv_msg+0x36d/0x690
   rdma_nl_rcv+0x2ee/0x430
   netlink_unicast+0x543/0x7f0
   netlink_sendmsg+0x918/0xe20
   sock_sendmsg+0xcf/0x120
   ____sys_sendmsg+0x70d/0x8b0
   ___sys_sendmsg+0x11d/0x1b0
   __sys_sendmsg+0xfa/0x1d0
   do_syscall_64+0x35/0xb0
   entry_SYSCALL_64_after_hwframe+0x63/0xcd

This will help debug the issues syzkaller is seeing.

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/0-v1-a7c81b3842ce+e5-netdev_tracker_jgg@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
driver core: make struct class.dev_uevent() take a const * 2022-11-24T16:12:15+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2022-11-23T12:25:19+00:00 23680f0b7d7f67a935adb38058110d2d81bbe6ea 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> 
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>
Merge 6.1-rc6 into driver-core-next 2022-11-21T09:21:53+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2022-11-21T09:21:53+00:00 05df6ab8eba625a1d97eb67ee06d786b8e460685 We need the kernfs changes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
We need the kernfs changes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
driver core: class: make namespace and get_ownership take const * 2022-11-09T14:49:32+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2022-10-01T16:54:26+00:00 fa627348cfc7fb174468d88756b83c2d97890b07 The callbacks in struct class namespace() and get_ownership() do not modify the struct device passed to them, so mark the pointer as constant and fix up all callbacks in the kernel to have the correct function signature. This helps make it more obvious what calls and callbacks do, and do not, modify structures passed to them. Cc: "Rafael J. Wysocki" <rafael@kernel.org> Link: https://lore.kernel.org/r/20221001165426.2690912-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The callbacks in struct class namespace() and get_ownership() do not
modify the struct device passed to them, so mark the pointer as constant
and fix up all callbacks in the kernel to have the correct function
signature.

This helps make it more obvious what calls and callbacks do, and do not,
modify structures passed to them.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20221001165426.2690912-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>