Re: [RESEND PATCH net v4 1/2] soc: fsl: qbman: Always disable interrupts when taking cgr_lock

From: Sean Anderson <sean.anderson@seco.com>
To: Vladimir Oltean <vladimir.oltean@nxp.com>, Arnd Bergmann <arnd@arndb.de>
Cc: "David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	Steffen Trumtrar <s.trumtrar@pengutronix.de>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Roy Pledge <roy.pledge@nxp.com>,
	Camelia Groza <camelia.groza@nxp.com>,
	Claudiu Manoil <claudiu.manoil@nxp.com>,
	Scott Wood <oss@buserror.net>,
	stable@vger.kernel.org
Subject: Re: [RESEND PATCH net v4 1/2] soc: fsl: qbman: Always disable interrupts when taking cgr_lock
Date: Tue, 20 Feb 2024 11:04:19 -0500	[thread overview]
Message-ID: <cc5794cd-8f75-4694-bec6-1c8d7860f877@seco.com> (raw)
In-Reply-To: <20240219153016.ntltc76bphwrv6hn@skbuf>

On 2/19/24 10:30, Vladimir Oltean wrote:
> Hi Sean,
>
> On Thu, Feb 15, 2024 at 11:23:26AM -0500, Sean Anderson wrote:
>> smp_call_function_single disables IRQs when executing the callback. To
>> prevent deadlocks, we must disable IRQs when taking cgr_lock elsewhere.
>> This is already done by qman_update_cgr and qman_delete_cgr; fix the
>> other lockers.
>>
>> Fixes: 96f413f47677 ("soc/fsl/qbman: fix issue in qman_delete_cgr_safe()")
>> CC: stable@vger.kernel.org
>> Signed-off-by: Sean Anderson <sean.anderson@seco.com>
>> Reviewed-by: Camelia Groza <camelia.groza@nxp.com>
>> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
>> ---
>> I got no response the first time I sent this, so I am resending to net.
>> This issue was introduced in a series which went through net, so I hope
>> it makes sense to take it via net.
>>
>> [1] https://cas5-0-urlprotect.trendmicro.com:443/wis/clicktime/v1/query?url=https%3a%2f%2flore.kernel.org%2flinux%2darm%2dkernel%2f20240108161904.2865093%2d1%2dsean.anderson%40seco.com%2f&umid=75622bdd-3d90-45a2-89a9-60921f1f3189&auth=d807158c60b7d2502abde8a2fc01f40662980862-0625a208f4f6c241a307b4380763ba50532758bf
>>
>> (no changes since v3)
>>
>> Changes in v3:
>> - Change blamed commit to something more appropriate
>>
>> Changes in v2:
>> - Fix one additional call to spin_unlock
>
> Leo Li (Li Yang) is no longer with NXP. Until we figure out within NXP
> how to continue with the maintainership of drivers/soc/fsl/, yes, please
> continue to submit this series to 'net'. I would also like to point
> out to Arnd that this is the case.
>
> Arnd, a large portion of drivers/soc/fsl/ is networking-related
> (dpio, qbman). Would it make sense to transfer the maintainership
> of these under the respective networking drivers, to simplify the
> procedures?
>
> Also, your patches are whitespace-damaged. They do not apply to the
> kernel, and patchwork shows this as well.
> https://cas5-0-urlprotect.trendmicro.com:443/wis/clicktime/v1/query?url=https%3a%2f%2fpatchwork.kernel.org%2fproject%2fnetdevbpf%2fpatch%2f20240215162327.3663092%2d1%2dsean.anderson%40seco.com%2f&umid=75622bdd-3d90-45a2-89a9-60921f1f3189&auth=d807158c60b7d2502abde8a2fc01f40662980862-ec9df03b11ef3e6b48a457ca5469e0b20c4b0439
>
> Please repost with this fixed.

Hm, I used the same method I have in the past (git send-email). But I
guess something is converting my tabs to spaces? Maybe it is related to
the embedded world advertisement...

Maybe the solution is to get a kernel.org email...

--Sean

[Embedded World 2024, SECO SpA]<https://www.messe-ticket.de/Nuernberg/embeddedworld2024/Register/ew24517689>

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