On Mon, 2018-04-23 at 15:39 +0300, Luciano Coelho wrote:
> On Mon, 2018-04-23 at 15:05 +0300, Mika Westerberg wrote:
> > Hi,
>
> Hi Mika,
>
>
> > On my Lenovo X1 Carbon gen 5 system,after I upgraded to v4.17-rc1
> > iwlwifi started to fail with following splats on dmesg:
> >
> > iwlwifi 0000:04:00.0: Microcode SW error detected. Restarting
> > 0x2000000.
> > iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
> > iwlwifi 0000:04:00.0: Status: 0x00000100, count: 6
> > iwlwifi 0000:04:00.0: Loaded firmware version: 31.560484.0
> > iwlwifi 0000:04:00.0: 0x00000038 | BAD_COMMAND
>
> [...]
>
> > The controller in question is:
> >
> > 04:00.0 Network controller [0280]: Intel Corporation Wireless
> > 8265
> > / 8275 [8086:24fd] (rev 88)
> >
> > Bisection pointed to the following commit and after I reverted it,
> > things seem to work fine again:
> >
> > 66fa2424df16 ("iwlwifi: fw api: support the new scan request FW
> > API
> > version")
> >
> > Any idea what might be wrong with that commit and how to fix it
> > properly?
>
> We had a bug in the scan command size for older firmwares. I have
> already made a fix for it, but I hadn't sent it out for upstream
> yet.
> I'll send it out now and soon send you a link to it in patchwork.
Here's the patch that solves the problem with older FWs:
https://patchwork.kernel.org/patch/10356987/
--
Cheers,
Luca.
