linux-kernel - Re: [PATCH ath-next] wifi: ath12k: limit WMI_SCAN_CHAN_LIST

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Message-ID: <a44f064f-19fd-16ea-222f-058486698951@quicinc.com>
Date: Thu, 13 Mar 2025 15:15:05 +0530
From: Vasanthakumar Thiagarajan <quic_vthiagar@...cinc.com>
To: Mantas Pucka <mantas@...vices.com>, <ath12k@...ts.infradead.org>
CC: Johannes Berg <johannes@...solutions.net>,
        Jeff Johnson
	<jjohnson@...nel.org>, <linux-wireless@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH ath-next] wifi: ath12k: limit WMI_SCAN_CHAN_LIST_CMDID
 argument size



On 3/10/2025 6:58 PM, Mantas Pucka wrote:
> When using BDF with both 5GHz and 6GHz bands enabled on QCN9274, interface
> fails to start. It happens because FW fails to process
> WMI_SCAN_CHAN_LIST_CMDID with argument size >2048, resulting in a command
> timeout. The current code allows splitting channel list across multiple WMI
> commands but uses WMI max_msg_len (4096) as chunk size, which is still too

Did you have any private changes to increase the message_len from current
2048 ot 4096 bytes? As mentioned in a reply for your other patch, multi-band
in qcn9274 requires additional changes in driver, only scan mode is supported
even with those changes.

Vasanth