wifi: mt76: mt792x: add PSE handling barrier for the large MCU cmd

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Add a dummy register read in mt76_connac_mcu_rate_txpower_band() to act as
a PSE barrier. This would release PSE pages and prevents buffer underflow
issues when handling MCU commands with larger payloads without the response
in mt76_connac_mcu_set_rate_txpower().

This is a prerequisite patch before enabling MT7902 PCIe and SDIO support.

Co-developed-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260219004007.19733-6-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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Sean Wang 2026-02-18 18:40:02 -06:00 • committed by Felix Fietkau

parent 0a7d2fca06

commit 14a7ba034f

2 changed files with 6 additions and 0 deletions

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4

drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c

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2

drivers/net/wireless/mediatek/mt76/mt792x_regs.h

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