- 27 Nov, 2023 3 commits
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Johannes Berg authored
In some cases there might be longer-running hardware accesses in debugfs files, or attempts to acquire locks, and we want to still be able to quickly remove the files. Introduce a cancellations API to use inside the debugfs handler functions to be able to cancel such operations on a per-file basis. Acked-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Johannes Berg <johannes.berg@intel.com>
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Johannes Berg authored
When you take a lock in a debugfs handler but also try to remove the debugfs file under that lock, things can deadlock since the removal has to wait for all users to finish. Add lockdep annotations in debugfs_file_get()/_put() to catch such issues. Acked-by:
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Johannes Berg authored
debugfs_create_automount() stores a function pointer in d_fsdata, but since commit 7c8d4698 ("debugfs: add support for more elaborate ->d_fsdata") debugfs_release_dentry() will free it, now conditionally on DEBUGFS_FSDATA_IS_REAL_FOPS_BIT, but that's not set for the function pointer in automount. As a result, removing an automount dentry would attempt to free the function pointer. Luckily, the only user of this (tracing) never removes it. Nevertheless, it's safer if we just handle the fsdata in one way, namely either DEBUGFS_FSDATA_IS_REAL_FOPS_BIT or allocated. Thus, change the automount to allocate it, and use the real_fops in the data to indicate whether or not automount is filled, rather than adding a type tag. At least for now this isn't actually needed, but the next changes will require it. Also check in debugfs_file_get() that it gets only called on regular files, just to make things clearer. Acked-by:
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- 24 Nov, 2023 7 commits
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Ben Greear authored
The new 320 MHz channel width wasn't handled, so connecting a station to a 320 MHz AP would limit the station to 20 MHz (on HT) after a warning, handle 320 MHz to fix that. Signed-off-by:
Ben Greear <greearb@candelatech.com> Link: https://lore.kernel.org/r/20231109182201.495381-1-greearb@candelatech.com [write a proper commit message] Signed-off-by:
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Michael-CY Lee authored
ieee80211_he_6ghz_oper() can be passed a NULL pointer and checks for that, but already did the calculation to inside of it before. Move it after the check. Signed-off-by:
Michael-CY Lee <michael-cy.lee@mediatek.com> Link: https://lore.kernel.org/r/20231122030237.31276-1-michael-cy.lee@mediatek.com [rewrite commit message] Signed-off-by:
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Johannes Berg authored
Given all the locking rework in mac80211, we pretty much need to get into the driver with the wiphy mutex held in all callbacks. This is already mostly the case, but as Johan reported, in the get_txpower it may not be true. Lock the wiphy mutex around nl80211_send_iface(), then is also around callers of nl80211_notify_iface(). This is easy to do, fixes the problem, and aligns the locking between various calls to it in different parts of the code of cfg80211. Fixes: 0e8185ce ("wifi: mac80211: check wiphy mutex in ops") Reported-by:
Johan Hovold <johan@kernel.org> Closes: https://lore.kernel.org/r/ZVOXX6qg4vXEx8dX@hovoldconsulting.comTested-by:
Johan Hovold <johan+linaro@kernel.org> Signed-off-by:
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Johannes Berg authored
We want to guarantee the mutex is held for pretty much all operations, so ensure that here as well. Reported-by: syzbot+7e59a5bfc7a897247e18@syzkaller.appspotmail.com Signed-off-by: -
Johannes Berg authored
My prior race fix here broke CQM when ranges aren't used, as the reporting worker now requires the cqm_config to be set in the wdev, but isn't set when there's no range configured. Rather than continuing to special-case the range version, set the cqm_config always and configure accordingly, also tracking if range was used or not to be able to clear the configuration appropriately with the same API, which was actually not right if both were implemented by a driver for some reason, as is the case with mac80211 (though there the implementations are equivalent so it doesn't matter.) Also, the original multiple-RSSI commit lost checking for the callback, so might have potentially crashed if a driver had neither implementation, and userspace tried to use it despite not being advertised as supported. Cc: stable@vger.kernel.org Fixes: 4a4b8169 ("cfg80211: Accept multiple RSSI thresholds for CQM") Fixes: 37c20b2e ("wifi: cfg80211: fix cqm_config access race") Signed-off-by:
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Oldřich Jedlička authored
This fixes WARN_ONs when using AP_VLANs after station removal. The flush call passed AP_VLAN vif to driver, but because these vifs are virtual and not registered with drivers, we need to translate to the correct AP vif first. Closes: https://github.com/openwrt/openwrt/issues/12420 Fixes: 0b75a1b1 ("wifi: mac80211: flush queues on STA removal") Fixes: d00800a2 ("wifi: mac80211: add flush_sta method") Tested-by:
Konstantin Demin <rockdrilla@gmail.com> Tested-by:
Koen Vandeputte <koen.vandeputte@citymesh.com> Signed-off-by:
Oldřich Jedlička <oldium.pro@gmail.com> Link: https://lore.kernel.org/r/20231104141333.3710-1-oldium.pro@gmail.comSigned-off-by:
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Dan Carpenter authored
This error path should return -EINVAL instead of success. Fixes: 57974a55 ("wifi: iwlwifi: mvm: refactor iwl_mvm_mac_sta_state_common()") Signed-off-by:
Dan Carpenter <dan.carpenter@linaro.org> Acked-by:
Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/75e4ea09-db58-462f-bd4e-5ad4e5e5dcb5@moroto.mountainSigned-off-by:
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- 22 Nov, 2023 1 commit
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Lorenzo Bianconi authored
Use iftype for interface type switch in mt7925_init_he_caps routine. This found during code review but later Coverity reported this with id 1549845. Fixes: c948b5da ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips") Signed-off-by:
Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by:
Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/7de6e939dc75ee08f05bf1ee73253aa7eeccf28e.1699869649.git.lorenzo@kernel.org
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- 08 Nov, 2023 1 commit
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Ming Yen Hsieh authored
No matter CLC is enabled or disabled, the driver should initialize the default value 0xff for channel configuration of CLC. Otherwise, the zero value would disable channels. Reported-and-tested-by:
Ming Yen Hsieh <mingyen.hsieh@mediatek.com> Signed-off-by:
Deren Wu <deren.wu@mediatek.com> Signed-off-by:
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- 28 Oct, 2023 4 commits
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Jakub Kicinski authored
W=1 builds now warn if module is built without a MODULE_DESCRIPTION(). Acked-by:
Willem de Bruijn <willemb@google.com> Acked-by:
Jamal Hadi Salim <jhs@mojatatu.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Jason Wang <jasowang@redhat.com> Acked-by:
Taehee Yoo <ap420073@gmail.com> Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jakub Kicinski authored
W=1 builds now warn if module is built without a MODULE_DESCRIPTION(). Reviewed-by:
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Jakub Kicinski authored
W=1 builds now warn if module is built without a MODULE_DESCRIPTION(). Reviewed-by:
Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by:
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Jakub Kicinski authored
W=1 builds now warn if module is built without a MODULE_DESCRIPTION(). Fill it in for the modules I maintain. Acked-by:
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- 27 Oct, 2023 24 commits
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Raju Lakkaraju authored
Add DW_2500BASEX case in xpcs_get_state( ) to update speed, duplex and pause Signed-off-by:
Raju Lakkaraju <Raju.Lakkaraju@microchip.com> Reviewed-by:
Serge Semin <fancer.lancer@gmail.com> Link: https://lore.kernel.org/r/20231027044306.291250-1-Raju.Lakkaraju@microchip.comSigned-off-by:
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Yonghong Song authored
With latest sync from net-next tree, bpf-next has a bpf selftest failure: [root@arch-fb-vm1 bpf]# ./test_progs -t setget_sockopt ... [ 76.194349] ============================================ [ 76.194682] WARNING: possible recursive locking detected [ 76.195039] 6.6.0-rc7-g37884503df08-dirty #67 Tainted: G W OE [ 76.195518] -------------------------------------------- [ 76.195852] new_name/154 is trying to acquire lock: [ 76.196159] ffff8c3e06ad8d30 (sk_lock-AF_INET){+.+.}-{0:0}, at: ip_sock_set_tos+0x19/0x30 [ 76.196669] [ 76.196669] but task is already holding lock: [ 76.197028] ffff8c3e06ad8d30 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_listen+0x21/0x70 [ 76.197517] [ 76.197517] other info that might help us debug this: [ 76.197919] Possible unsafe locking scenario: [ 76.197919] [ 76.198287] CPU0 [ 76.198444] ---- [ 76.198600] lock(sk_lock-AF_INET); [ 76.198831] lock(sk_lock-AF_INET); [ 76.199062] [ 76.199062] *** DEADLOCK *** [ 76.199062] [ 76.199420] May be due to missing lock nesting notation [ 76.199420] [ 76.199879] 2 locks held by new_name/154: [ 76.200131] #0: ffff8c3e06ad8d30 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_listen+0x21/0x70 [ 76.200644] #1: ffffffff90f96a40 (rcu_read_lock){....}-{1:2}, at: __cgroup_bpf_run_filter_sock_ops+0x55/0x290 [ 76.201268] [ 76.201268] stack backtrace: [ 76.201538] CPU: 4 PID: 154 Comm: new_name Tainted: G W OE 6.6.0-rc7-g37884503df08-dirty #67 [ 76.202134] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 76.202699] Call Trace: [ 76.202858] <TASK> [ 76.203002] dump_stack_lvl+0x4b/0x80 [ 76.203239] __lock_acquire+0x740/0x1ec0 [ 76.203503] lock_acquire+0xc1/0x2a0 [ 76.203766] ? ip_sock_set_tos+0x19/0x30 [ 76.204050] ? sk_stream_write_space+0x12a/0x230 [ 76.204389] ? lock_release+0xbe/0x260 [ 76.204661] lock_sock_nested+0x32/0x80 [ 76.204942] ? ip_sock_set_tos+0x19/0x30 [ 76.205208] ip_sock_set_tos+0x19/0x30 [ 76.205452] do_ip_setsockopt+0x4b3/0x1580 [ 76.205719] __bpf_setsockopt+0x62/0xa0 [ 76.205963] bpf_sock_ops_setsockopt+0x11/0x20 [ 76.206247] bpf_prog_630217292049c96e_bpf_test_sockopt_int+0xbc/0x123 [ 76.206660] bpf_prog_493685a3bae00bbd_bpf_test_ip_sockopt+0x49/0x4b [ 76.207055] bpf_prog_b0bcd27f269aeea0_skops_sockopt+0x44c/0xec7 [ 76.207437] __cgroup_bpf_run_filter_sock_ops+0xda/0x290 [ 76.207829] __inet_listen_sk+0x108/0x1b0 [ 76.208122] inet_listen+0x48/0x70 [ 76.208373] __sys_listen+0x74/0xb0 [ 76.208630] __x64_sys_listen+0x16/0x20 [ 76.208911] do_syscall_64+0x3f/0x90 [ 76.209174] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 ... Both ip_sock_set_tos() and inet_listen() calls lock_sock(sk) which caused a dead lock. To fix the issue, use sockopt_lock_sock() in ip_sock_set_tos() instead. sockopt_lock_sock() will avoid lock_sock() if it is in bpf context. Fixes: 878d951c ("inet: lock the socket in ip_sock_set_tos()") Suggested-by:Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by:
Yonghong Song <yonghong.song@linux.dev> Reviewed-by:
Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20231027182424.1444845-1-yonghong.song@linux.devSigned-off-by:
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Konstantin Taranov authored
This patch uses a helper function for assignment of xdp_features. This change simplifies backports. Signed-off-by:
Konstantin Taranov <kotaranov@microsoft.com> Signed-off-by:
Haiyang Zhang <haiyangz@microsoft.com> Link: https://lore.kernel.org/r/1698430011-21562-1-git-send-email-haiyangz@microsoft.comSigned-off-by:
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Benjamin Poirier authored
This patch is basically a followup to commit 4e4b1798 ("vxlan: Add missing entries to vxlan_get_size()"). All of the attributes in vxlan_get_size() appear in the same order that they are filled in vxlan_fill_info() except for IFLA_VXLAN_PORT_RANGE. For consistency, move that entry to match its order and add a comment, like for all other entries. Signed-off-by:
Benjamin Poirier <bpoirier@nvidia.com> Link: https://lore.kernel.org/r/20231027184410.236671-1-bpoirier@nvidia.comSigned-off-by:
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Jakub Kicinski authored
Jacob Keller says: ==================== Intel Wired LAN Driver Updates for 2023-10-23 (iavf) This series includes iAVF driver cleanups from Michal Schmidt. Michal removes and updates stale comments, fixes some locking anti-patterns, improves handling of resets when the PF is slow, avoids unnecessary duplication of netdev state, refactors away some duplicate code, and finally removes the never-actually-used client interface. Changes since v1: * Dropped patch ("iavf: in iavf_down, disable queues when removing the driver") which was applied directly to net. * Fixed a merge conflict due to 7db31110 ("iavf: initialize waitqueues before starting watchdog_task"). V1 was originally posted at: https://lore.kernel.org/netdev/20231027104109.4f536f51@kernel.org/T/#mfadbdb39313eeccc616fdee80a4fdd6bda7e2822 ==================== Link: https://lore.kernel.org/r/20231027175941.1340255-1-jacob.e.keller@intel.comSigned-off-by: -
Michal Schmidt authored
The iavf client interface was added in 2017 by commit ed0e894d ("i40evf: add client interface"), but there have never been any in-tree callers. It's not useful for future development either. The Intel out-of-tree iavf and irdma drivers instead use an auxiliary bus, which is a better solution. Remove the iavf client interface code. Also gone are the client_task work and the client_lock mutex. Signed-off-by:
Michal Schmidt <mschmidt@redhat.com> Reviewed-by:
Jacob Keller <jacob.e.keller@intel.com> Signed-off-by:
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Michal Schmidt authored
Add a new function iavf_free_interrupt_scheme that does the inverse of iavf_init_interrupt_scheme. Symmetry is nice. And there will be three callers already. Signed-off-by:
Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by:
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Michal Schmidt authored
Use unregister_netdev, which takes rtnl_lock for us. We don't have to check the reg_state under rtnl_lock. There's nothing to race with. We have just cancelled the finish_config work. Signed-off-by:
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Michal Schmidt authored
The information whether a netdev has been registered is already present in the netdev itself. There's no need for a driver flag with the same meaning. Signed-off-by:
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Michal Schmidt authored
Every time I create VFs on ice, I receive at least one "Device is still in reset (-16), retrying" message per VF. It recovers fine, but typical usecases should not trigger scary-looking messages. The waiting for reset is too short. It makes no sense to check every 10 microseconds. Typical reset waiting times are at least tens of milliseconds and can be several seconds. I suspect the polling interval was meant to be 10 milliseconds all along. IAVF_RESET_WAIT_COMPLETE_COUNT is defined as 2000, so the total waiting time could be over 20 seconds. I have seen resets take 5 seconds (with 128 VFs on ice). The added benefit of not triggering the "Device is still in reset" path is that we avoid going through the __IAVF_INIT_FAILED state, which would take a full second before retrying. Signed-off-by:
Rafal Romanowski <rafal.romanowski@intel.com> Signed-off-by:
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Michal Schmidt authored
The reason for queueing watchdog_task is to have it process the aq_required flags that are being set here. If comms failed, there's nothing to do, so return early. Signed-off-by:
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Michal Schmidt authored
This pattern appears in two places in the iavf source code: while (!mutex_trylock(...)) usleep_range(...); That's just mutex_lock with extra steps. The pattern is a leftover from when iavf used bit flags instead of mutexes for locking. Commit 5ac49f3c ("iavf: use mutexes for locking of critical sections") replaced test_and_set_bit with !mutex_trylock, preserving the pattern. Simplify it to mutex_lock. Signed-off-by: -
Michal Schmidt authored
Bit lock __IAVF_IN_CRITICAL_TASK does not exist anymore since commit 5ac49f3c ("iavf: use mutexes for locking of critical sections"). Adjust the comments accordingly. Signed-off-by:
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Davide Caratti authored
allow specifying cmd-cnt-name and cmd-max-name in netlink specs, in accordance with Documentation/userspace-api/netlink/c-code-gen.rst. Use cmd-cnt-name and attr-cnt-name in the mptcp yaml spec and in the corresponding uAPI headers, to preserve the #defines we had in the past and avoid adding new ones. v2: - squash modification in mptcp.yaml and MPTCP uAPI headers Suggested-by:
Davide Caratti <dcaratti@redhat.com> Link: https://lore.kernel.org/r/12d4ed0116d8883cf4b533b856f3125a34e56749.1698415310.git.dcaratti@redhat.comSigned-off-by:
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Jiri Pirko authored
In case the kernel sends message back containing attribute not defined in family spec, following exception is raised to the user: $ sudo ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/devlink.yaml --do trap-get --json '{"bus-name": "netdevsim", "dev-name": "netdevsim1", "trap-name": "source_mac_is_multicast"}' Traceback (most recent call last): File "/home/jiri/work/linux/tools/net/ynl/lib/ynl.py", line 521, in _decode attr_spec = attr_space.attrs_by_val[attr.type] ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^ KeyError: 132 During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/jiri/work/linux/./tools/net/ynl/cli.py", line 61, in <module> main() File "/home/jiri/work/linux/./tools/net/ynl/cli.py", line 49, in main reply = ynl.do(args.do, attrs, args.flags) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/jiri/work/linux/tools/net/ynl/lib/ynl.py", line 731, in do return self._op(method, vals, flags) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/jiri/work/linux/tools/net/ynl/lib/ynl.py", line 719, in _op rsp_msg = self._decode(decoded.raw_attrs, op.attr_set.name) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/jiri/work/linux/tools/net/ynl/lib/ynl.py", line 525, in _decode raise Exception(f"Space '{space}' has no attribute with value '{attr.type}'") Exception: Space 'devlink' has no attribute with value '132' Introduce a command line option "process-unknown" and pass it down to YnlFamily class constructor to allow user to process unknown attributes and types and print them as binaries. $ sudo ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/devlink.yaml --do trap-get --json '{"bus-name": "netdevsim", "dev-name": "netdevsim1", "trap-name": "source_mac_is_multicast"}' --process-unknown {'UnknownAttr(129)': {'UnknownAttr(0)': b'\x00\x00\x00\x00\x00\x00\x00\x00', 'UnknownAttr(1)': b'\x00\x00\x00\x00\x00\x00\x00\x00', 'UnknownAttr(2)': b'\x0e\x00\x00\x00\x00\x00\x00\x00'}, 'UnknownAttr(132)': b'\x00', 'UnknownAttr(133)': b'', 'UnknownAttr(134)': {'UnknownAttr(0)': b''}, 'bus-name': 'netdevsim', 'dev-name': 'netdevsim1', 'trap-action': 'drop', 'trap-group-name': 'l2_drops', 'trap-name': 'source_mac_is_multicast'} Signed-off-by:Jiri Pirko <jiri@nvidia.com> Link: https://lore.kernel.org/r/20231027092525.956172-1-jiri@resnulli.usSigned-off-by:
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Eric Dumazet authored
Both ipvlan_process_v4_outbound() and ipvlan_process_v6_outbound() increment dev->stats.tx_errors in case of errors. Unfortunately there are two issues : 1) ipvlan_get_stats64() does not propagate dev->stats.tx_errors to user. 2) Increments are not atomic. KCSAN would complain eventually. Use DEV_STATS_INC() to not miss an update, and change ipvlan_get_stats64() to copy the value back to user. Fixes: 2ad7bf36 ("ipvlan: Initial check-in of the IPVLAN driver.") Signed-off-by:
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Ido Schimmel authored
Like other buses, devices on the netdevsim bus have a release callback that is invoked when the reference count of the device drops to zero. However, unlike other buses such as PCI, the release callback is not necessarily built into the kernel, as netdevsim can be built as a module. The above is problematic as nothing prevents the module from being unloaded before the release callback has been invoked, which can happen asynchronously. One such example can be found in commit a3806872 ("devlink: take device reference for devlink object") where devlink calls put_device() from an RCU callback. The issue is not theoretical and the reproducer in [1] can reliably crash the kernel. The conclusion of this discussion was that the issue should be solved in netdevsim, which is what this patch is trying to do. Add a reference count that is increased when a device is added to the bus and decreased when a device is released. Signal a completion when the reference count drops to zero and wait for the completion when unloading the module so that the module will not be unloaded before all the devices were released. The reference count is initialized to one so that completion is only signaled when unloading the module. With this patch, the reproducer in [1] no longer crashes the kernel. [1] https://lore.kernel.org/netdev/20230619125015.1541143-2-idosch@nvidia.com/ Fixes: a3806872 ("devlink: take device reference for devlink object") Signed-off-by:
Ido Schimmel <idosch@nvidia.com> Reviewed-by:
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Fei Qin authored
The napi_build_skb() can reuse the skb in skb cache per CPU or can allocate skbs in bulk, which helps improve the performance. Signed-off-by:
Fei Qin <fei.qin@corigine.com> Signed-off-by:
Louis Peens <louis.peens@corigine.com> Reviewed-by:
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Colin Ian King authored
There is a spelling mistake in a dev_dbg message. Fix it. Signed-off-by:
Colin Ian King <colin.i.king@gmail.com> Reviewed-by:
Simon Horman <horms@kernel.org> Reviewed-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/all/20231026065408.1087824-1-colin.i.king@gmail.com/Signed-off-by:
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Jakub Kicinski authored
Oleksij Rempel says: ==================== net: dsa: microchip: provide Wake on LAN support (part 2) This patch series introduces extensive Wake on LAN (WoL) support for the Microchip KSZ9477 family of switches, coupled with some code refactoring and error handling enhancements. The principal aim is to enable and manage Wake on Magic Packet and other PHY event triggers for waking up the system, whilst ensuring that the switch isn't reset during a shutdown if WoL is active. The Wake on LAN functionality is optional and is particularly beneficial if the PME pins are connected to the SoC as a wake source or to a PMIC that can enable or wake the SoC. ==================== Link: https://lore.kernel.org/r/20231026051051.2316937-1-o.rempel@pengutronix.deSigned-off-by:
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Oleksij Rempel authored
Ensures a stable PME (Power Management Event) pin state by disabling PME on system start and enabling it on shutdown only if WoL (Wake-on-LAN) is configured. This is needed to avoid issues with some PMICs (Power Management ICs). Signed-off-by:
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Oleksij Rempel authored
Centralize the switch shutdown routine in a dedicated function, ksz_switch_shutdown(), to enhance code maintainability and reduce redundancy. This change abstracts the common shutdown operations previously duplicated in ksz9477_i2c_shutdown() and ksz_spi_shutdown(). This refactoring is a preparatory step for an upcoming patch to avoid reset on shutdown if Wake-on-LAN (WoL) is enabled. Signed-off-by:
Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by:
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Oleksij Rempel authored
Enhance the ksz_switch_macaddr_get() function to handle errors that may occur during the call to ksz_write8(). Specifically, this update checks the return value of ksz_write8(), which may fail if regmap ranges validation is not passed and returns the error code. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Reviewed-by:
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Oleksij Rempel authored
Update the comment to follow kernel-doc format. Signed-off-by:
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