netdev - Re: [PATCH net-next 1/6] mlxsw: spectrum: Remove pointless call to devlink_param_driverinit_value

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Message-ID: <Y+IAH9uhhcev9MXT@nanopsycho>
Date:   Tue, 7 Feb 2023 08:39:11 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Petr Machata <petrm@...dia.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        Jacob Keller <jacob.e.keller@...el.com>,
        Ido Schimmel <idosch@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        Danielle Ratson <danieller@...dia.com>, mlxsw@...dia.com
Subject: Re: [PATCH net-next 1/6] mlxsw: spectrum: Remove pointless call to
 devlink_param_driverinit_value_set()

Mon, Feb 06, 2023 at 04:39:18PM CET, petrm@...dia.com wrote:
>From: Danielle Ratson <danieller@...dia.com>
>
>The "acl_region_rehash_interval" devlink parameter is a "runtime"
>parameter, making the call to devl_param_driverinit_value_set()
>pointless. Before cited commit the function simply returned an error
>(that was not checked), but now it emits a WARNING [1].
>
>Fix by removing the function call.
>
>[1]
>WARNING: CPU: 0 PID: 7 at net/devlink/leftover.c:10974
>devl_param_driverinit_value_set+0x8c/0x90
>[...]
>Call Trace:
> <TASK>
> mlxsw_sp2_params_register+0x83/0xb0 [mlxsw_spectrum]
> __mlxsw_core_bus_device_register+0x5e5/0x990 [mlxsw_core]
> mlxsw_core_bus_device_register+0x42/0x60 [mlxsw_core]
> mlxsw_pci_probe+0x1f0/0x230 [mlxsw_pci]
> local_pci_probe+0x1a/0x40
> work_for_cpu_fn+0xf/0x20
> process_one_work+0x1db/0x390
> worker_thread+0x1d5/0x3b0
> kthread+0xe5/0x110
> ret_from_fork+0x1f/0x30
> </TASK>
>
>Fixes: 85fe0b324c83 ("devlink: make devlink_param_driverinit_value_set() return void")
>Signed-off-by: Danielle Ratson <danieller@...dia.com>
>Reviewed-by: Ido Schimmel <idosch@...dia.com>

Reviewed-by: Jiri Pirko <jiri@...dia.com>

>Signed-off-by: Petr Machata <petrm@...dia.com>