Rakesh Pillai <pillair@xxxxxxxxxxxxxx> wrote:
> The tlv targets such as WCN3990 send more data in the chan info event, which is
> not sent by the non tlv targets. There is a minimum size check in the wmi event
> for non-tlv targets and hence we cannot update the common channel info
> structure as it was done in commit 13104929d2ec ("ath10k: fill the channel
> survey results for WCN3990 correctly"). This broke channel survey results on
> 10.x firmware versions.
>
> If the common channel info structure is updated, the size check for chan info
> event for non-tlv targets will fail and return -EPROTO and we see the below
> error messages
>
> ath10k_pci 0000:01:00.0: failed to parse chan info event: -71
>
> Add tlv specific channel info structure and restore the original size of the
> common channel info structure to mitigate this issue.
>
> Tested HW: WCN3990
> QCA9887
> Tested FW: WLAN.HL.3.1-00784-QCAHLSWMTPLZ-1
> 10.2.4-1.0-00037
>
> Fixes: 13104929d2ec ("ath10k: fill the channel survey results for WCN3990 correctly")
> Cc: stable@xxxxxxxxxxxxxxx # 5.0
> Signed-off-by: Rakesh Pillai <pillair@xxxxxxxxxxxxxx>
> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Patch applied to ath-next branch of ath.git, thanks.
6be6c04bcc2e ath10k: fix channel info parsing for non tlv target
--
https://patchwork.kernel.org/patch/10844513/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
