Re: [PATCH] net: qrtr: resend HELLO on MHI resume

[Takashi Iwai]

On Mon, 14 Sep 2026 11:04:25 +0200,
Thorsten Leemhuis wrote:
> 
> On 9/9/26 07:58, 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.
> 
> For the record: Takashi ran into this regression as well and provided a
> different fix, but withdrew it after I pointed out this fix, which
> worked for Takashi. For details see:
> https://lore.kernel.org/all/87mrtkpd2q.wl-tiwai@xxxxxxx/

Yep, feel free to take my tested-by tag, too:

Tested-by: Takashi Iwai <tiwai@xxxxxxx>


thanks,

Takashi