[PATCH ath-current v2] wifi: ath10k: Fix connection after GTK rekeying

[Vasanthakumar Thiagarajan]

On 9/2/2025 8:02 PM, Loic Poulain wrote:
> It appears that not all hardware/firmware implementations support
> group key deletion correctly, which can lead to connection hangs
> and deauthentication following GTK rekeying (delete and install).
> 
> To avoid this issue, instead of attempting to delete the key using
> the special WMI_CIPHER_NONE value, we now replace the key with an
> invalid (random) value.
> 
> This behavior has been observed with WCN39xx chipsets.
> 
> Tested-on: WCN3990 hw1.0 WLAN.HL.3.3.7.c2-00931-QCAHLSWMTPLZ-1
> Reported-by: "Alexey Klimov" <alexey.klimov at linaro.org>
> Closes: https://lore.kernel.org/all/DAWJQ2NIKY28.1XOG35E4A682G@linaro.org
> Signed-off-by: Loic Poulain <loic.poulain at oss.qualcomm.com>

Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan at oss.qualcomm.com>