From 2fe5bdbe7e137645004c8d91e1b9d96b86105b26 Mon Sep 17 00:00:00 2001
From: Peter Chiu <chui-hao.chiu@mediatek.com>
Date: Wed, 8 Oct 2025 12:41:49 +0200
Subject: [PATCH] wifi: mt76: use GFP_DMA32 for page_pool buffer allocation

Set GFP_DMA32 flag for page_pool buffers allocation since the hw relies
on 32-bit DMA addresses for WED offloading.

Tested-by: Daniel Pawlik <pawlik.dan@gmail.com>
Tested-by: Matteo Croce <teknoraver@meta.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20251008-wed-fixes-v1-2-8f7678583385@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 mt76.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mt76.h b/mt76.h
index ca2781a2..89f25115 100644
--- a/mt76.h
+++ b/mt76.h
@@ -1881,7 +1881,8 @@ mt76_get_page_pool_buf(struct mt76_queue *q, u32 *offset, u32 size)
 {
 	struct page *page;
 
-	page = page_pool_dev_alloc_frag(q->page_pool, offset, size);
+	page = page_pool_alloc_frag(q->page_pool, offset, size,
+				    GFP_ATOMIC | __GFP_NOWARN | GFP_DMA32);
 	if (!page)
 		return NULL;