[PATCH] wifi: mt76: mt7925: Add flag to control if need DMA re-init

[PATCH] wifi: mt76: mt7925: Add flag to control if need DMA re-init

[JB Tsai]

From: Jeff Hsu <Jeff.Hsu@mediatek.com>

Add flag(skip_wpdma_reinit) to control if need do DMA re-init

Signed-off-by: Jeff Hsu <Jeff.Hsu@mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 4 ++++
 drivers/net/wireless/mediatek/mt76/mt792x.h     | 1 +
 drivers/net/wireless/mediatek/mt76/mt792x_dma.c | 5 +++++
 3 files changed, 10 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
index c8537a5cdf67..154e4372664e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -650,6 +650,10 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
 	if (!mt7925_disable_aspm && mt76_pci_aspm_supported(pdev))
 		dev->aspm_supported = true;
 
+	/* MT7935 does not need wpdma reinit */
+	if (is_mt7928(&dev->mt76))
+		dev->skip_wpdma_reinit = true;
+
 	ret = __mt792x_mcu_fw_pmctrl(dev);
 	if (ret)
 		goto err_free_dev;
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x.h b/drivers/net/wireless/mediatek/mt76/mt792x.h
index 8c7ecd3ce126..18d6e2c35606 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x.h
+++ b/drivers/net/wireless/mediatek/mt76/mt792x.h
@@ -271,6 +271,7 @@ struct mt792x_dev {
 	bool hif_idle:1;
 	bool hif_resumed:1;
 	bool regd_change:1;
+	bool skip_wpdma_reinit:1;
 	wait_queue_head_t wait;
 
 	struct work_struct init_work;
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
index 8ad94fa58340..8308935491d3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
@@ -418,6 +418,11 @@ int mt792x_wpdma_reinit_cond(struct mt792x_dev *dev)
 	struct mt76_connac_pm *pm = &dev->pm;
 	int err;
 
+	/* Skip wpdma reinit if chip doesn't need it */
+	if (dev->skip_wpdma_reinit) {
+		return 0;
+	}
+
 	/* check if the wpdma must be reinitialized */
 	if (mt792x_dma_need_reinit(dev)) {
 		/* disable interrutpts */
-- 
2.45.2