Commit 2d5630b0 authored by Quan Zhou's avatar Quan Zhou Committed by Felix Fietkau
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wifi: mt76: mt7925: fix fails to enter low power mode in suspend state 



The mt7925 sometimes fails to enter low power mode during suspend.
This is caused by the chip firmware sending an additional ACK event
to the host after processing the suspend command. Due to timing issues,
this event may not reach the host, causing the chip to get stuck.
To resolve this, the ACK flag in the suspend command is removed,
as it is not needed in the MT7925 architecture. This prevents the
firmware from sending the additional ACK event, ensuring the device
can reliably enter low power mode during suspend.

Signed-off-by: default avatarQuan Zhou <quan.zhou@mediatek.com>
Link: https://patch.msgid.link/d056938144a3a0336c3a4e3cec6f271899f32bf7.1736775666.git.quan.zhou@mediatek.com


Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 5fd0ff3b

drivers/net/wireless/mediatek/mt76/mt7925/mcu.c

+3 −0
Original line number Diff line number Diff line
@@ -3272,6 +3272,9 @@ int mt7925_mcu_fill_message(struct mt76_dev *mdev, struct sk_buff *skb, 
		else

			uni_txd->option = MCU_CMD_UNI_EXT_ACK;



		if (cmd == MCU_UNI_CMD(HIF_CTRL))

			uni_txd->option &= ~MCU_CMD_ACK;



		goto exit;

	}