linux-kernel - CX23885: DVB-T not working after S3 suspend and resume

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Date:   Mon, 11 Dec 2023 23:01:15 +0100
From:   Valerio Vanni <valerio.vanni@...ind.it>
To:     linux-kernel@...r.kernel.org
Subject: CX23885: DVB-T not working after S3 suspend and resume

It's also here:
https://bugzilla.kernel.org/show_bug.cgi?id=218196

System is a Debian 11 amd64, kernel 5.10.201, DVB-T board is an Hauppage 
WinTV-quad.
It happens with every kernel version tried, 4.x, 5.x, 6.x.

If a DVB-T streaming is being played (i.e. I'm watching TV channels in 
Kaffeine) and I suspend to ram with /usr/sbin/pm-suspend, when system 
resumes DVB play is unable to continue.
Closing and reopening kaffeine doesn't help.

The only thing I can do, then, is:
-close kaffeine
-rmmod cx23885
-modprobe cx23885

I attach a boot dmesg, a suspend / resume without DVB play, and another 
with DVB play active.

View attachment "suspendresume.txt" of type "text/plain" (13957 bytes)

View attachment "dmesg.txt" of type "text/plain" (136367 bytes)

View attachment "suspendresume-module_in_use.txt" of type "text/plain" (9665 bytes)