From: Jakub Kicinski <kuba@kernel.org>
To: Yan Wang <rocklouts@sina.com>
Cc: davem@davemloft.net, alexandre.torgue@foss.st.com,
peppe.cavallaro@st.com, joabreu@synopsys.com,
edumazet@google.com, pabeni@redhat.com,
mcoquelin.stm32@gmail.com, netdev@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
John 'Warthog9' Hawley <warthog9@kernel.org>
Subject: Re: [PATCH] net: stmmac:fix system hang when setting up standalone tag_8021q VLAN for DSA ports
Date: Mon, 10 Apr 2023 17:32:27 -0700 [thread overview]
Message-ID: <20230410173227.74f9d60a@kernel.org> (raw)
In-Reply-To: <20230408155823.12834-1-rocklouts@sina.com>
On Sat, 8 Apr 2023 23:58:23 +0800 Yan Wang wrote:
> The system hang because of dsa_tag_8021q_port_setup() callbcak
> stmmac_vlan_rx_add_vid().I found in stmmac_drv_probe() that
> cailing pm_runtime_put() disabled the clock when check the stmmac
> dirver.
>
> First, when the kernel is compiled with CONFIG_PM=y,The stmmac's
> resume/suspend is active.
>
> Secondly,stmmac as DSA master,the dsa_tag_8021q_port_setup() function
> will callback stmmac_vlan_rx_add_vid when DSA dirver starts. However,
> The system is hanged for the stmmac_vlan_rx_add_vid() accesses its
> registers after stmmac's clock is closed.
>
> I would suggest adding the pm_runtime_resume_and_get() to the
> stmmac_vlan_rx_add_vid().This guarantees that resuming clock output
> while in use.
Hm, the patch is not making it to the @vger list, even tho it did make
it to lore.kernel.org, it seems. I couldn't spot anything wrong with it.
Could you try sending it to testing@vger.kernel.org and contacting
John (added to CC) who administers vger.kernel.org, to figure out
what's wrong?
Based on this conversation:
https://lore.kernel.org/all/9539b880-642d-9ac5-ccfa-2b237548f4fc@kernel.org/
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WARNING: multiple messages have this Message-ID (diff)
From: Jakub Kicinski <kuba@kernel.org>
To: Yan Wang <rocklouts@sina.com>
Cc: davem@davemloft.net, alexandre.torgue@foss.st.com,
peppe.cavallaro@st.com, joabreu@synopsys.com,
edumazet@google.com, pabeni@redhat.com,
mcoquelin.stm32@gmail.com, netdev@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
John 'Warthog9' Hawley <warthog9@kernel.org>
Subject: Re: [PATCH] net: stmmac:fix system hang when setting up standalone tag_8021q VLAN for DSA ports
Date: Mon, 10 Apr 2023 17:32:27 -0700 [thread overview]
Message-ID: <20230410173227.74f9d60a@kernel.org> (raw)
In-Reply-To: <20230408155823.12834-1-rocklouts@sina.com>
On Sat, 8 Apr 2023 23:58:23 +0800 Yan Wang wrote:
> The system hang because of dsa_tag_8021q_port_setup() callbcak
> stmmac_vlan_rx_add_vid().I found in stmmac_drv_probe() that
> cailing pm_runtime_put() disabled the clock when check the stmmac
> dirver.
>
> First, when the kernel is compiled with CONFIG_PM=y,The stmmac's
> resume/suspend is active.
>
> Secondly,stmmac as DSA master,the dsa_tag_8021q_port_setup() function
> will callback stmmac_vlan_rx_add_vid when DSA dirver starts. However,
> The system is hanged for the stmmac_vlan_rx_add_vid() accesses its
> registers after stmmac's clock is closed.
>
> I would suggest adding the pm_runtime_resume_and_get() to the
> stmmac_vlan_rx_add_vid().This guarantees that resuming clock output
> while in use.
Hm, the patch is not making it to the @vger list, even tho it did make
it to lore.kernel.org, it seems. I couldn't spot anything wrong with it.
Could you try sending it to testing@vger.kernel.org and contacting
John (added to CC) who administers vger.kernel.org, to figure out
what's wrong?
Based on this conversation:
https://lore.kernel.org/all/9539b880-642d-9ac5-ccfa-2b237548f4fc@kernel.org/
next prev parent reply other threads:[~2023-04-11 0:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-06 10:04 [PATCH] net: stmmac: fix system hang when setting up standalone tag_8021q VLAN for DSA ports louts
2023-04-08 2:57 ` Jakub Kicinski
2023-04-08 2:57 ` Jakub Kicinski
2023-04-08 15:58 ` [PATCH] net: stmmac:fix " Yan Wang
2023-04-11 0:32 ` Jakub Kicinski [this message]
2023-04-11 0:32 ` Jakub Kicinski
2023-04-08 18:09 ` [PATCH] net: stmmac: fix " Yan Wang
2023-04-08 18:13 ` Yan Wang
2023-04-10 7:20 ` Yan Wang
-- strict thread matches above, loose matches on Subject: below --
2023-04-07 16:15 louts
2023-04-07 16:42 [net] " louts
2023-04-08 15:09 ` [PATCH] net: stmmac:fix " Yan Wang
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