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Re: [PATCH net] wifi: iwlwifi: remove 'use_tfh' config to fix crash

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On Mon, Jul 10, 2023 at 04:50:39PM +0200, Johannes Berg wrote:
> From: Johannes Berg <johannes.berg@xxxxxxxxx>
> 
> This is equivalent to 'gen2', and it was always confusing to have
> two identical config entries. The split config patch actually had
> been originally developed after removing 'use_tfh" and didn't add
> the use_tfh in the new configs as they'd later been copied to the
> new files. Thus the easiest way to fix the init crash here now is
> to just remove use_tfh (which is erroneously unset in most of the
> configs now) and use 'gen2' in the code instead.
> 
> There's possibly still an unwind error in iwl_txq_gen2_init() as
> it crashes if TXQ 0 fails to initialize, but we can deal with it
> later since the original failure is due to the use_tfh confusion.
> 
> Tested-by: Xi Ruoyao <xry111@xxxxxxxxxxx>
> Reported-and-tested-by: Niklāvs Koļesņikovs <pinkflames.linux@xxxxxxxxx>
> Reported-and-tested-by: Jeff Chua <jeff.chua.linux@xxxxxxxxx>
> Reported-and-tested-by: Zhang Rui <rui.zhang@xxxxxxxxx>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217622
> Link: https://lore.kernel.org/all/9274d9bd3d080a457649ff5addcc1726f08ef5b2.camel@xxxxxxxxxxx/
> Link: https://lore.kernel.org/all/CAAJw_Zug6VCS5ZqTWaFSr9sd85k%3DtyPm9DEE%2BmV%3DAKoECZM%2BsQ@xxxxxxxxxxxxxx/
> Fixes: 19898ce9cf8a ("wifi: iwlwifi: split 22000.c into multiple files")
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>

Hi Johannes,

I can confirm that this is now working with 83.e8f84e98.0 so-a0-gf-a0-83.ucode.
it wasnt with 6.5-rc1 and both 78 and 83 firmwares.

Tested-by: Rudi Heitbaum <rudi@xxxxxxxxxxxx>



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