Any bisection would take ages, as I need to run for approaching a week to be sure. There are only 3 commits that are possible. commit 95f408bbc4e4d46c75da3d2558dd835e56ac7720 Author: Brad Love <brad@xxxxxxxxxxxxxxxx> Date: Tue May 8 17:20:18 2018 -0400 media: cx23885: Ryzen DMA related RiSC engine stall fixes commit 3b8315f37d6eaa36f0f2e484eabaef03a7bd1eff Author: Brad Love <brad@xxxxxxxxxxxxxxxx> Date: Tue May 8 17:20:17 2018 -0400 media: cx23885: Use PCI and TS masks in irq functions commit 9a7dc2b064ef7477d4c3a477f4de0a44b3a40cbd Author: Brad Love <brad@xxxxxxxxxxxxxxxx> Date: Tue May 8 17:20:16 2018 -0400 media: cx23885: Handle additional bufs on interrupt Cheers David On 15/09/18 01:42, Vincent McIntyre wrote: > On Thu, Sep 13, 2018 at 06:39:57PM +0100, David R wrote: >> Hi >> >> Just a heads up. I'm having to revert cx23885-core.c to the 4.17 version >> to obtain stability with my old AMD Phenom/ASUS M4A785TD and Hauppauge >> WinTV-HVR-5525. The latest code drops out and refuses to return video >> streams in hours or a few days max. The 4.17 version is fine and stable >> over weeks/months. >> >> 04:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8 >> PCIe Broadcast Audio and Video Decoder with 3D Comb (rev 04) >> Subsystem: Hauppauge computer works Inc. Device f038 >> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- >> Stepping- SERR+ FastB2B- DisINTx- >> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- >> <TAbort- <MAbort- >SERR- <PERR- INTx- >> Latency: 0, Cache Line Size: 64 bytes >> Interrupt: pin A routed to IRQ 17 >> Region 0: Memory at fe800000 (64-bit, non-prefetchable) [size=2M] >> Capabilities: <access denied> >> Kernel driver in use: cx23885 > Interesting. cx88 also seems to have regressed. > Are you able to give a git commit range for what works & doesn't work? > > I asked Adam to try building the modules with media-build > but have not heard anything further. > > Date: Sat, 8 Sep 2018 20:49:22 -0400 > From: Adam Stylinski <kungfujesus06@xxxxxxxxx> > To: linux-media@xxxxxxxxxxxxxxx > Subject: 4.18 regression > > Hello, > > I haven't done a thorough bisection of kernel revisions, but moving from kernel 4.17.19 > to 4.18.6 results in mythtv being unable to tune in any channel with a pic hdtv 5500 > tuner (cx88 based device with an LG frontend). I get an error back from the channel > scanner about not being able to measure signal strength and getting back an error unknown > (errno 254). > > I was able to use dvbtools with get-atsc to get a channel, but I don't think any of the > forward error correction was applied to it. > > Let me know if you need more details. > > Vince
