From: Vlastimil Babka <vbabka@suse.com>
To: Manivannan Sadhasivam <mani@kernel.org>,
Daniel J Blueman <daniel@quora.org>,
netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>,
Chris Lew <christopher.lew@oss.qualcomm.com>,
Pranav Mahesh Phansalkar <pranav.phansalkar@oss.qualcomm.com>,
Deepak Kumar Singh <deepak.singh@oss.qualcomm.com>,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] net: qrtr: resend HELLO on MHI resume
Date: Mon, 21 Sep 2026 09:58:32 +0200 [thread overview]
Message-ID: <71362ec5-ba7f-411f-b2d8-6913a08be8af@suse.com> (raw)
In-Reply-To: <nhbc6epjziyb455l6z4xqunfb74bdboycuq52vt6nrr7fqjo3z@ruh4isxdkyom>
On 9/18/26 19:05, Manivannan Sadhasivam wrote:
> + netdev
>
> On Wed, Sep 09, 2026 at 01:58:44PM +0800, Daniel J Blueman wrote:
>> Since the MHI HELLO exchange was relocated, it is sent only at device
>> registration. During a suspend-resume cycle, the firmware in WiFi
>> cards such as WCN7850 indefinitely waits for another HELLO,
>> triggering:
>>
>> ath12k_wifi7_pci 0004:01:00.0: timeout while waiting for restart complete
>> ath12k_wifi7_pci 0004:01:00.0: failed to resume core: -110
>>
>> Fix this by triggering the handshake from resume_early in the MHI
>> transport.
>>
>> Validated on Qualcomm X1E-801800 on Lenovo Slim 7x across 10
>> suspend-resume cycles.
>>
>> Fixes: 544d85de4dc2 ("net: qrtr: Send HELLO message on endpoint register")
>> Signed-off-by: Daniel J Blueman <daniel@quora.org>
>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
>
> Since this patch fixes a regression in linux-next, it'd be good to get it merged
> asap.
Linus merged it directly for rc4 as 6a5719cc3ef2 ("net: qrtr: resend HELLO
on MHI resume")
> - Mani
>
next prev parent reply other threads:[~2026-09-21 7:58 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-09 5:58 Daniel J Blueman
2026-09-11 10:44 ` Manivannan Sadhasivam
2026-09-15 10:48 ` Vlastimil Babka
2026-09-16 3:09 ` Jeff Johnson
2026-09-16 9:36 ` Thorsten Leemhuis
2026-09-14 9:04 ` Thorsten Leemhuis
2026-09-14 9:39 ` Takashi Iwai
2026-09-15 10:11 ` Vlastimil Babka
2026-09-15 10:45 ` Vlastimil Babka (SUSE)
2026-09-18 17:05 ` Manivannan Sadhasivam
2026-09-21 7:58 ` Vlastimil Babka [this message]
2026-09-20 14:10 Quick regression status pre 7.3-rc4 Thorsten Leemhuis
2026-09-20 14:16 ` [PATCH] net: qrtr: resend HELLO on MHI resume Thorsten Leemhuis
2026-09-20 18:26 ` Linus Torvalds
2026-09-21 4:20 ` Thorsten Leemhuis
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